Boris Tsirelson facts for kids
Quick facts for kids
Boris Tsirelson
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Boris Tsirelson while a first-year student, in 1967
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| Born | May 4, 1950 |
| Died | January 21, 2020 (aged 69) |
| Known for | Tsirelson's bound Tsirelson space Tsirelson drift Gaussian isoperimetric inequality |
| Scientific career | |
| Thesis | General properties of bounded Gaussian processes and related questions (1975) |
| Doctoral advisor | Ildar Ibragimov |
Boris Semyonovich Tsirelson (born May 4, 1950 – died January 21, 2020) was a brilliant mathematician. He was from Russia and later became an Israeli citizen. He worked as a Professor of Mathematics at Tel Aviv University in Israel. He was also a Wikipedia editor.
About Boris Tsirelson
Boris Tsirelson was born in Leningrad, which is now a big city in Russia. His family was Jewish. His great-uncle, Yehuda Leib Tsirelson, was a well-known rabbi.
Boris studied at the University of Leningrad. He earned his Master of Science degree there. In 1975, he completed his Ph.D. His special research project was about "General properties of bounded Gaussian processes." His teacher and guide for this work was Ildar Abdulovich Ibragimov.
Later, Boris wanted to move to Israel. At that time, it was hard for some people to leave the Soviet Union. He finally received permission to move to Israel in 1991. From then until 2017, he was a professor at Tel Aviv University.
In 1998, he was invited to speak at the International Congress of Mathematicians in Berlin. This is a very important event for mathematicians around the world.
What Boris Tsirelson Discovered
Boris Tsirelson made important discoveries in two areas of mathematics: probability theory and functional analysis. Probability theory helps us understand chance and randomness. Functional analysis deals with spaces of functions.
Here are some of his key contributions:
- Tsirelson's bound: This is an important rule in quantum mechanics. It helps scientists understand how particles behave in a strange way, even when they are far apart. It is related to something called quantum nonlocality.
- Tsirelson space: This is a special example of a Banach space. A Banach space is a type of mathematical space used in advanced studies. Tsirelson's space is unique because it does not contain simpler, more common types of spaces.
- Tsirelson drift: This is a special example used in the study of stochastic differential equations. These equations help describe things that change randomly over time, like the path of a tiny particle.
- Gaussian isoperimetric inequality: Boris Tsirelson helped prove this important rule. It states that for a special kind of measurement (called the Gaussian measure), the best shapes to enclose a certain amount of "stuff" are simple flat regions. Think of it like finding the most efficient way to cut a piece of cake if the cake's density changes.
