ELI5: Explain Like I'm 5

Gilles Pisier

Gilles Pisier is a person who likes math a lot. He is very good at it and has studied it for a very long time. Just like how you go to school to learn math, Gilles also went to school to learn math but for many years. He has even taught math to other people as a professor at a university.

Gilles is particularly interested in a type of math called functional analysis. This type of math uses a lot of fancy words that can be hard to understand, but basically it is about studying mathematical objects that behave like shapes or spaces. For example, imagine a ball. In functional analysis, we might try to understand how the ball behaves when we stretch it or move it around.

Gilles has made many discoveries and written lots of papers about functional analysis. He has even won some awards for his work! This means that other people who like math like his ideas and think they are very helpful for understanding the world of math.

So, Gilles Pisier is a very smart person who really likes math, has studied it for a long time, and has made some important discoveries about a type of math called functional analysis.