Grigory Yakovlevich Perelman. Born on June 13, 1966 in Leningrad (now St. Petersburg). Russian mathematician, who proved the Poincaré conjecture.

By nationality - Jewish.

Father - Yakov Perelman, an electrical engineer, emigrated to Israel in 1993.

Mother - Lyubov Leibovna Shteingolts, worked as a mathematics teacher at a vocational school, after her husband left for Israel, she remained in St. Petersburg.

The younger sister is Elena (born 1976), mathematician, graduate of St. Petersburg University (1998), defended her PhD thesis at the Weizmann Institute in Rehovot in 2003, and has been working as a programmer in Stockholm since 2007.

Some sources mistakenly attribute Perelman a relationship with Yakov Isidorovich Perelman, famous physicist, mathematician and astronomer. But they are just namesakes.

Gregory's mother played the violin and early years instilled in him a love of classical music, he graduated music school. He played table tennis well.

From the 5th grade, Grigory studied at the mathematics center at the Palace of Pioneers under the guidance of RGPU associate professor Sergei Rukshin, whose students won many awards at mathematical Olympiads. In 1982, as part of a team of Soviet schoolchildren, he won a gold medal at the International Mathematical Olympiad in Budapest, receiving full marks for flawlessly solving all problems.

Until the 9th grade, Perelman studied at a high school on the outskirts of Leningrad, then transferred to the 239th physics and mathematics school. I did not receive a gold medal due to a low grade in physical education.

After graduating from school without exams, he was enrolled in the Faculty of Mathematics and Mechanics of Leningrad State University. He won faculty, city and all-Union student mathematical Olympiads. All the years I studied only with “excellent” marks. For academic success he received a Lenin scholarship.

After graduating with honors from the university, he entered graduate school (scientific supervisor - A.D. Aleksandrov) at the Leningrad branch of the Mathematical Institute. V. A. Steklova (LOMI - until 1992; then - POMI).

Having defended his Ph.D. thesis on “Saddle surfaces in Euclidean spaces” in 1990, he remained to work at the institute as a senior researcher.

In 1991, he was awarded the “Young Mathematician” Prize of the St. Petersburg Mathematical Society for his work “Aleksandrov spaces with curvature bounded from below.”

In the early 1990s, Perelman came to the United States, where he worked as a researcher at various universities. He surprised his colleagues with his ascetic lifestyle; his favorite foods were milk, bread and cheese.

In 1994 proved the soul hypothesis(differential geometry). He proved several key statements in the Alexandrov geometry of spaces of curvature bounded below.

In 1996, he returned to St. Petersburg, continuing to work at POMI, where he worked alone on proving the Poincaré conjecture.

In 1996, the European Mathematical Society Prize for Young Mathematicians was awarded, but he refused to receive it.

Entropy formula for Ricci flow and its geometric applications;
- Ricci flow with surgery on three-dimensional manifolds;
- Finite decay time for solutions of Ricci flow on some three-dimensional manifolds.

The appearance on the Internet of Perelman's first article on the entropy formula for the Ricci flow caused an immediate international sensation in scientific circles. In 2003, Grigory Perelman accepted an invitation to visit a number of American universities, where he gave a series of reports on his work to prove the Poincaré conjecture.

In America, Perelman spent a lot of time explaining his ideas and methods, both in public lectures organized for him and during personal meetings with a number of mathematicians. After his return to Russia, he answered numerous questions from his foreign colleagues by email.

In 2004-2006, three independent groups of mathematicians were involved in checking Perelman’s results:

1. Bruce Kleiner, John Lott, University of Michigan;
2. Zhu Xiping, Sun Yat-sen University, Cao Huaidong, Lehigh University;
3. John Morgan, Columbia University, Gan Tian, ​​Massachusetts Institute of Technology.

All three groups concluded that the Poincaré conjecture was completely proven, but Chinese mathematicians Zhu Xiping and Cao Huaidong, along with their teacher Yau Shintong, attempted plagiarism by claiming that they had found a "complete proof". They later retracted this statement.

In December 2005, Grigory Perelman resigned from his post as a leading researcher at the Laboratory of Mathematical Physics, resigned from POMI and almost completely broke off contacts with colleagues.

In 2006, Grigory Perelman was awarded the international Fields Medal for his solution to the Poincaré conjecture - “For his contribution to geometry and his revolutionary ideas in the study of the geometric and analytical structure of the Ricci flow.” However, he refused it.

In 2007, the British newspaper The Daily Telegraph published a list of “One Hundred Living Geniuses”, in which Grigory Perelman ranks 9th. In addition to Perelman, only 2 Russians were included in this list - Garry Kasparov (25th place) and Mikhail Kalashnikov (83rd place).

In March 2010, the Clay Mathematics Institute awarded Grigory Perelman a US$1 million prize for his proof of the Poincaré conjecture, marking the first time in history that the prize had been awarded for solving one of the Millennium Problems.

In June 2010, Perelman ignored a mathematical conference in Paris, at which the Millennium Prize was supposed to be awarded for proving the Poincaré conjecture, and on July 1, 2010, he publicly announced his refusal of the prize. He motivated as follows: “I refused. You know, I had a lot of reasons in both directions. That's why it took me so long to decide. To put it very briefly, then main reason is a disagreement with the organized mathematical community. I don't like their decisions, I think they are unfair. I believe that the contribution of the American mathematician Hamilton to solving this problem is no less than mine.”

“Simply, the essence of Poincaré’s theory can be stated as follows: if a three-dimensional surface is somewhat similar to a sphere, then it can be straightened into a sphere. Poincaré's statement is called the “Formula of the Universe” because of its importance in the study of complex physical processes in the theory of the universe and because it provides an answer to the question of the shape of the Universe. That’s why they struggled with its proof for so many years. I know how to control the Universe. And tell me, why should I run for a million?”, he said in an interview.

Such a public assessment of the merits of Richard Hamilton by the mathematician who proved the Poincaré conjecture can be an example of nobility in science, since, according to Perelman himself, Hamilton, who collaborated with Yau Shintun, noticeably slowed down in his research, encountering insurmountable technical difficulties.

In September 2011, the Clay Institute, together with the Henri Poincaré Institute (Paris), created a position for young mathematicians, the money for which will come from the Millennium Prize awarded but not accepted by Grigory Perelman.

In 2011, Richard Hamilton and Demetrios Christodoulou were awarded the so-called. The $1,000,000 Shao Prize in Mathematics, also sometimes called Nobel Prize East. Richard Hamilton was awarded for creating a mathematical theory, which was then developed by Grigory Perelman in his work to prove the Poincaré conjecture. Hamilton accepted the award.

In 2011, Masha Gessen’s book about the fate of Perelman, “Perfect Severity. Grigory Perelman: genius and the task of the millennium,” based on numerous interviews with his teachers, classmates, co-workers and colleagues.

In September 2011, it became known that the mathematician refused to accept the offer to become a member of the Russian Academy of Sciences.

Personal life of Grigory Perelman:

Not married. Have no children.

Leads a secluded life, ignores the press. Lives in St. Petersburg in Kupchin with his mother.

There were reports in the press that since 2014 Gregory has been living in Sweden, but later it turned out that he only visits there sporadically.

Russian mathematician, author of the proof of Poincaré's theorem - one of the fundamental problems of mathematics. Candidate of Physical and Mathematical Sciences. He worked at the Leningrad (St. Petersburg) department of the Steklov Mathematical Institute and taught at a number of US universities. Since 2003, he has not worked and hardly communicates with outsiders.

Grigory Yakovlevich Perelman was born on June 13, 1966 in Leningrad. His father was an electrical engineer who immigrated to Israel in 1993. Mother remained in St. Petersburg, worked as a mathematics teacher at a vocational school.

Perelman graduated from secondary school number 239 with in-depth study of mathematics. In 1982, as part of a team of schoolchildren, he participated in the International Mathematical Olympiad in Budapest. In the same year, he was enrolled in the Faculty of Mathematics and Mechanics of Leningrad State University without exams. He won faculty, city and all-Union student mathematical Olympiads. All the years he studied, he received a Lenin scholarship and graduated from the university with honors.

He entered graduate school at the Leningrad (now St. Petersburg) department of the Mathematical Institute. V. A. Steklov of the USSR Academy of Sciences (now RAS). Perelman's scientific supervisor was academician Alexander Danilovich Alexandrov. After defending his Ph.D. thesis, Perelman continued to work in the laboratory of mathematical physics at the Steklov Institute.

In 1992, Perelman was invited to spend a semester each at New York University and Stony Brook University, then continued teaching and research at Berkeley. In 1996 he returned to the Steklov Institute.

Perelman is known for his work on the theory of Alexandrov spaces and was able to prove a number of hypotheses.

In November 2002 - July 2003, Perelman posted three scientific articles on the website arXiv.org, which in an extremely condensed form contained a solution to one of the special cases of William Thurston's geometrization hypothesis, leading to a proof of the Poincaré conjecture. The proof of this theorem (which states that every simply connected closed three-dimensional manifold is homeomorphic to a three-dimensional sphere) is considered one of the fundamental problems of mathematics. The method of studying Ricci flow described by the scientist was called the Hamilton-Perelman theory. These works by Perelman did not receive the status of an official scientific publication, since arXiv.org is a library of preprints and not a peer-reviewed journal. Perelman made no attempts to officially publish these works.

In 2003, Perelman gave a series of lectures in the United States on his work, after which he returned to St. Petersburg and settled in his mother’s apartment in Kupchino. He resigned from his post as a leading researcher at the Laboratory of Mathematical Physics and almost completely cut off contacts with colleagues.

Over four years of checking and detailing Perelman’s calculations, leading experts in this field did not find any errors. On August 22, 2006, Perelman was awarded the Fields Medal "for his contributions to geometry and revolutionary achievements in understanding the analytical and geometric structure of the Ricci flow." Perelman refused to accept the award and communicate with journalists.

For the proof of Poincaré's theorem, the Clay Mathematical Institute (USA) awarded a prize of one million dollars. According to the prize's rules, Perelman can be awarded the award after publishing his work in a peer-reviewed journal.

The brilliant mathematician Grigory Perelman shocked scientific world, proving the Poincaré conjecture - one of the most difficult mysteries of the millennium. And ordinary people were surprised by the poor scientist’s refusal to accept a million-dollar bonus. Gradually, the genius himself and his reclusive lifestyle became a mystery, comparable in complexity to a proven theorem.

Childhood and youth

Grigory Yakovlevich leads a secretive lifestyle. The facts of the scientist’s childhood, youth and personal life are known from the words of neighbors, school teachers and classmates and colleagues who worked with the mathematician.

Perelman was born on June 13, 1966 in Leningrad. The name of the brilliant mathematician speaks for itself about his nationality. Since childhood, the Jewish boy showed incredible abilities and interest in learning. While his peers were kicking a ball in the yard, little Grisha preferred to read books and play chess.

Contrary to popular belief, Yakov Isidorovich Perelman, the famous scientist, author of books and popularizer of science, is not a relative of Grigory Yakovlevich.

Gregory's father is an electrical engineer. In 1993, Perelman Sr. immigrated to his historical homeland of Israel, like thousands of his compatriots in the 90s. The mother of the future outstanding mathematician stayed with the children in Leningrad and taught mathematics at the school.

Grigory Yakovlevich has a younger sister who has built a scientific career. Having received a diploma in mathematics from St. Petersburg University, the woman later left for Sweden. Since 2007 he has been working as a programmer in Stockholm.

By the time the boy went to school, he was significantly superior to his classmates in knowledge and could easily count three-digit numbers in his head. Perelman’s teachers recall that the student had conversations on equal terms with adults.

The magic of logic and numbers attracted Grigory Yakovlevich. From the 5th grade, the boy attended the mathematics center at the Palace of Pioneers. The mentor of the young prodigies was an associate professor. Pedagogical University named after A.I. Herzen Sergei Rukshin. Young Grisha received awards for participating in Olympiads, including earning the highest score at the International Mathematical Olympiad.

After graduating from a nine-year school in an ordinary Leningrad school, the graduate moved to specialized physics and mathematics school No. 239. Without a doubt, the hardworking and talented Perelman was an ideal student. Physical training failed me. Failure to pass the GTO standards prevented the graduate from receiving a gold medal.

It is not surprising that after school, Gregory was accepted into the Leningrad University without entrance exams. State University at the Faculty of Mathematics and Mechanics. At the university, Perelman continued to shine at the Olympiads and received the Lenin Prize for excellent educational results.

The science

After graduation, graduate school followed, then a doctorate. As a result, the gifted scientist remained to work at his home university as a senior researcher.

In the early 90s, the talented scientist went to the USA, where he visited several universities as part of an exchange of experience. In the United States, the mathematician gave lectures and met with colleagues. Soon, the ascetic Perelman became bored with America, and the scientist returned to his homeland.

Having resumed work at a Leningrad university, the mathematician begins to work hard on the riddle of the millennium, which the brilliant scientists of the century were unable to solve. It is worth noting that several years earlier Perelman’s passion for topology began. Previously, the mathematician was able to prove the soul hypothesis, which preceded the study of the Poincaré conjecture.

The meaning of proving a hypothesis, as well as the essence itself, cannot be described in simple language, understandable for a person far from higher mathematics. The discoveries made by the mathematician have great value in the study of the Universe, in working with nanotechnology.

In addition, the hypothesis states that the peculiarity of the shape of the Universe leads to the fact that it can be compressed into one point. This, in turn, indirectly confirms the theory big bang. Proponents of the theological origins of the universe have had reason to doubt God as the creator of all things. Poincaré's conjecture proves that there is no God.

In 2002-2003, Perelman published articles revealing the essence of the proof. Three independent teams of mathematicians tested the arguments and confirmed the complete proof.

In 2003, Perelman visited the United States, gave lectures about his own discovery, and shared his experience with his compatriots. And in 2005, the scientist unexpectedly left the department and locked himself in an apartment in Kupchino, where he lived with his sick mother.

Personal life

A reclusive lifestyle leaves hundreds of questions. The main thing of interest to journalists and citizens is the reason why Grigory Perelman refused the money that rightfully belonged to him. It's about about the Clay Institute Award. The Mathematical Institute has compiled a list of seven riddles, the solution of which carries a million-dollar reward. The Poincaré conjecture was included in this list.

Of course, having learned about the discovery of the Russian scientist, the founders immediately turned to the scientist. Imagine everyone's surprise when the mathematician refused a million dollars without explanation.

Soon Grigory Yakovlevich stopped communicating with the press altogether. He simply ignores Russian journalists and refuses interviews to foreign ones. News of the scientist’s similar behavior led to rumors about Perelman’s illness. They claimed that the genius suffered from autism. However, reliable evidence or doctors’ opinions have not yet been made public.

It is known that the scientist lives with his mother, who is seriously ill. The mathematician has no wife. According to the stories of Grigory Yakovlevich’s teacher, who maintains a relationship with him, mother and son live poorly.

In 2018, information appeared that the mathematician had moved to Sweden. However, sources represented by neighbors and store sellers denied the rumors and confirmed that Perelman did not leave.

• While working in the States, the scientist surprised his foreign colleagues with his unpretentiousness and detachment from everyday needs. The mathematician's favorite food was sandwiches with cheese, which Grigory Yakovlevich washed down with kefir or milk. Restaurants and abundance grocery stores were not interested in the “strange Russian”.

• As a child, Gregory was interested in music. The mother instilled in her son an adoration for classical composers. She, being a talented violinist, introduced Grisha to the instrument. Perelman enjoyed attending music school, and then he was faced with a difficult choice - to enter the conservatory or devote himself to the exact sciences.
• Statements from conspiracy theorists have appeared on the Internet that Perelman is the most influential person on earth because he knows how to control the Universe. Of course, such a person did not escape the attention of the secret services, and communication with others is prohibited for the scientist.

Quotes

I know how to control the Universe. And tell me - why should I run for a million?

The whole world is permeated by emptiness, and it obeys formulas - this gives us limitless possibilities.

If you can train your arms and legs, then why can't you train your brain?

There is, perhaps, no unsolvable problem. Difficult to solve. That's more accurate.

Remember the biblical legend about how Jesus Christ walked on water as well as dry land? So I needed to calculate how fast he had to move through the waters so as not to fall through.

Awards and prizes

• 1991 - Prize “Young Mathematician” of the St. Petersburg Mathematical Society
• 1996 - European Mathematical Society Prize for Young Mathematicians
• 2006 - Fields Medal Award
• 2010 - Clay Mathematics Institute Prize

Grigory Yakovlevich Perelman was born on June 13, 1966 in Leningrad (now St. Petersburg) in the family of a mathematics teacher and an electrical engineer. From early childhood, Perelman became interested not only in mathematics, but also in music. His mother, Lyubov Leibovna, plays the violin beautifully, and it is thanks to her that the brilliant mathematician has retained his love for classical music to this day. My father taught me to play chess and gave me “Entertaining Physics,” which was popular in the last century.

The talented child studied in a regular Leningrad high school, located far from the city center, until the 9th grade. However, already in the 5th grade he actively attended the mathematics center, the head of which was S. Rukshin, associate professor of the Russian State Pedagogical University.

The first victory was won at the International School Olympiad in Mathematics in Hungary. The only award in his life that Perelman did not refuse is the gold medal, which he was awarded in Budapest. After 9th grade, G. Perelman studied at the 239th Leningrad Physics and Mathematics School. At the same time I went to music school. Golden medal at the end high school was not received, since the not very athletic young man was unable to pass the GTO standards. Today there is an unprecedented competition at the lyceum - up to ten people per place.

He received his higher education at the Faculty of Mathematics and Mechanics of Leningrad State University, where he was admitted without any exams. All the time he had increased scholarships them. V.I. Lenin. He graduated from the university with honors, and Perelman entered graduate school under his leadership. A.D. Alexandrov under LOMI, and later POMI. V. A. Steklova. After defending his dissertation for a candidate's degree (1990), he remains at his own university as a senior researcher.

At the dawn of the 90s, G. Ya. Perelman worked as a researcher at several higher educational institutions in America - New York and Stony Brook. Since 1993, an internship for two years in the same place where he writes whole line scientific works. In 1994 he speaks at the Zurich IMC Congress. He is offered a job at Stanford, Tel Aviv, etc. Unassuming and simple in everyday life, the Russian scientist amazed his American scientific friends with his modesty, eating mostly bread and cheese and washing them down with milk.

In 1996, Perelman was awarded the European Society Prize for Young Mathematicians. The scientist does not accept it. In November 2002, Perelman blew up the minds of all mathematicians in the world. He publishes not somewhere in a reputable scientific journal, but directly on the Internet his conclusions on the Poincaré conjecture. Despite the lack of clear references and its brevity, the publication excited many. In 2003, Perelman gave lectures to US students and scientists about his work. Upon returning to St. Petersburg, the scientist stops all communication with former colleagues.

In 2005, Perelman stopped visiting his place of work, as they say, of his own free will, and in 2006, the proof of the St. Petersburg resident was recognized as the scientific breakthrough of the year, which happened for the first time in relation to “mental gymnastics”. Let us recall that the hypothesis about the probable forms of the Universe was put forward by a French mathematician a century ago. It was for her proof that Perelman was awarded the prestigious Fields Medal. There was a refusal from the Russian scientist. In March 2010, the Clay Mathematical Institute awarded him $1 million. Perelman also did not agree to accept them. Subsequently (2011) it was obtained by the Henri Poincaré Institute in Paris.

So, Perelman is the winner of three prizes, which he himself voluntarily refused. These include: awards of the European Mathematical Society (1996), Fields Medal (2006), Clay Mathematical Institute Millennium Prize (2010). In 2011, they decided to nominate Grigory Perelman from the St. Petersburg branch of the Mathematical Institute named after. Steklov into Russian academicians. The scientist did not give personal consent, they could not even find him, so at the moment the brilliant mathematician is not an academician.

The main work of the scientist is considered to be the Poincaré Hypothesis, but his work is not limited to this. There are three known articles, “The entropy formula for the Ricci flow and its geometric applications,” and the method of cognition itself is now called the Hamilton-Perelman theory. Previously, scientists proved the hypothesis about the soul (1994). Perelman is often credited with the authorship of the famous " Entertaining physics". In fact, the author of the book is another person - Yakov Isidorovich Perelman (1882-1942).

The personality of G. Ya. Perelman is so unusual that a lot of jokes have already been invented about him. It is worth noting that Perelman’s character in these masterpieces folk art He is always characterized positively, and if they laugh at him, it is in a very kind way, as at a favorite fairy-tale hero. For example:

Sonya, are you aware that the mathematician Grigory Perelman has not indicated in any way his desire to become an academician of the Russian Academy. He didn't even respond to letters or calls.
- Apparently, at this time, as usual, mushrooms appeared...

In addition to funny stories, even proverbs and sayings appeared. Grigory Perelman's law: there is no offer that cannot be refused.

Today, the world-famous scientist lives in a modest St. Petersburg apartment in Kupchino with his old mother. However, at the place of registration on the street. He appears to Furshtatskaya extremely rarely, only to collect bills. He avoids journalists and communicates with few people. The scientist is still friends with his teacher and mentor, S. Rukshin, who works at Lyceum No. 239, and turns to him for advice. According to the latest data, quiet genius Perelman is unemployed.

Grigory Perelman gained the reputation of an eccentric hermit and a strange person. Some even call him the St. Petersburg “rain man.” It’s probably not a matter of some disease, rumors about which journalists love to savor. It’s just that real science, which opens up new worlds for humanity, does not tolerate fuss. It is to Perelman that the words of his colleague at the institute Yu. Burago can be attributed: “Mathematics depends on depth.” The world-famous quiet genius rightfully ranks 9th among the hundred brilliant people of our time.

Grigory Perelman: How and where does the mathematician live now?

3.8 (76%) 5 votes

Grigory Perelman: How and where does the mathematician live now?

Exactly 15 years ago, a St. Petersburg scientist proved the Poincaré conjecture.

On November 11, 2002, an article from St. Petersburg appeared on one of the major scientific publication portals on the Internet. mathematician Grigory Perelman, in which he gave proof of the Poincaré conjecture.

Thus, the hypothesis became the first solved problem of the millennium - this is the name for mathematical questions whose answers have not been found for many years.

Eight years later, the Clay Mathematics Institute awarded the scientist a prize of one million US dollars for this achievement, but Perelman refused it, saying that he did not need the money and, moreover, did not agree with the official mathematical community.

The poor mathematician's refusal of a large sum caused surprise in all layers of society. For this and for his reclusive lifestyle, Perelman is called the strangest Russian scientist. We found out how Grigory Perelman lives and what he does today.

Mathematician No. 1

Now Grigory Perelman is 51 years old. The scientist leads a secluded life: he practically never leaves home, does not give interviews, and is not officially employed anywhere. The mathematician never had close friends, but people who know Perelman claim that he was not always like this.

“I remember Grisha as a teenager,” says Perelman’s housemate, Sergey Krasnov. – Although we live on different floors, we see each other sometimes. Previously, we could talk to his mother, Lyubov Leibovna, but now I rarely see her. She and Grigory periodically go out for a walk, but are always at home. When we see each other, they quickly nod and move on. They don't communicate with anyone. And during his school years, Grisha was no different from other boys. Of course, even then he was actively interested in science and spent a lot of time reading books, but he also found time for other things. I studied music, hung out with friends, and played sports. And then he sacrificed all his interests to mathematics. Was it worth it? Don't know".

Grigory always took first place in mathematics Olympiads, but one day victory eluded him: in the eighth grade at the All-Union Olympiad, Perelman became only second. Since then, he abandoned all his hobbies and recreation, immersing himself in books, reference books and encyclopedias. He soon caught up and became the #1 young mathematician in the country.

Reclusion

Krasnov states: none of the residents of their house doubted that Perelman would become a great scientist. “When we learned that Grisha proved the Poincaré conjecture, which no other person in the world could do, we were not even surprised,” the pensioner admits. - Of course, we were very happy for him, we decided: finally Grigory will make his way into the people, make a dizzying career! Well done, he deserves it! But he chose a different path for himself.”

Perelman refused a cash prize in the amount of a million dollars, justifying his decision by disagreement with the official mathematical community, while adding that he did not need the money.

After Perelman’s name thundered throughout the world, the mathematician was invited to the USA. In America, the scientist gave presentations, exchanged experience with foreign colleagues and explained his methods of solving mathematical problems. He quickly became bored with publicity. Returning to Russia, Perelman voluntarily left his post as a leading researcher at the laboratory of mathematical physics, resigned from the St. Petersburg branch of the Steklov Mathematical Institute of the Russian Academy of Sciences, and reduced his communication with colleagues to zero.

A few years later, they wanted to make Perelman a member of the Russian Academy of Sciences, but he refused. Having stopped almost all contacts with the outside world, the scientist locked himself in his apartment in Kupchino, on the outskirts of St. Petersburg, where he lives with his mother.

“Grisha was tortured by attention”

Nowadays, mathematicians very rarely leave home and spend whole days solving new problems. “Grisha and his mother live on Lyubov Leibovna’s pension,” says Krasnov. “We, the residents of the house, in no way condemn Grisha - they say, the man is in the prime of his life, but he doesn’t bring money to the family, he doesn’t help his old mother. There is no such. He is a genius, and geniuses cannot be condemned. Once they even wanted to chip in with the whole house to help them financially.But they refused - they said that they had enough. Lyubov Leibovna always said that Grisha is unpretentious: he wears jackets or boots for decades, and for lunch, macaroni and cheese is enough for him. Well, it’s not necessary, it’s not necessary.”

According to neighbors, any person in Perelman’s place would become unsociable and closed: although the mathematician has not given rise to discussion for a long time, his person still cannot be ignored.

“Some journalists are on duty at Perelman’s door 24 hours a day,” Sergei Petrovich is indignant. – Once they waited until Grisha and his mother were leaving the apartment for a walk. A huge cameraman literally dared Lyubov Leibovna to film the situation in their apartment - their apartment was not very tidy, and they decided to focus on this. And the young correspondent attacked Perelman himself with questions. They didn't go out for a long time after that. Everyone will be stressed here! Grisha was tormented with attention!”

Residents of the house are confident that Perelman will make a name for himself by making a new discovery in the field of mathematics. “His work will not be in vain,” says Krasnov. “You just need to leave him alone and let him live in peace.”