Petition - free Leonid Rybnikov

Stream: general

[Yury G. Kudryashov]

Leonid Rybnikov is a 2006 PhD student of Vinberg, now a professor at HSE (Moscow). He is in jail (for 13 days) for protesting the invasion. There is a petition demanding the court to free him; the authors ask that only mathematicians sign it. Here a mathematician is one who can prove, e.g., docs#nat.exists_infinite_primes, so all of you qualify. I doubt that Russian courts care about petitions but Leonid will be glad to see your support once he's free again. Here is a photo of him discussing math with students while waiting in line to be jailed.