471 reputation
310
bio website mccme.ru/~akopyan
location
age
visits member for 5 years
seen Nov 30 at 15:26

Nov
8
comment Number of orders of $k$-sums of $n$-numbers
Thank you! Can you estimate this number from below? Is it $O(|K|^{2(n-1)})$?
Nov
8
awarded  Nice Question
Nov
7
awarded  Yearling
Nov
7
awarded  Custodian
Nov
7
reviewed Approve Number of orders of $k$-sums of $n$-numbers
Nov
7
revised Number of orders of $k$-sums of $n$-numbers
added 2 characters in body
Nov
7
awarded  Student
Nov
7
asked Number of orders of $k$-sums of $n$-numbers
Oct
1
awarded  Necromancer
Apr
10
awarded  Nice Answer
Jul
30
comment A Weak Form of Borsuk's Conjecture
Dear Prof. Kalai, how many faces in your example?
Feb
1
awarded  Nice Answer
Jul
30
awarded  Commentator
Jul
30
comment (1-Lipschitz) + (length-preserving) = isometry
Here it is for high dimensional Euclidean case. cs.elte.hu/geometry/Workshop09/large_r5.pdf
Jul
29
revised (1-Lipschitz) + (length-preserving) = isometry
deleted 2 characters in body
Jul
29
answered (1-Lipschitz) + (length-preserving) = isometry
Jul
28
comment (1-Lipschitz) + (length-preserving) = isometry
Using that f is 1-Lipschitz and that [aa′] is a diameter, we get that β must be contained in the interior of α Why?
Apr
12
comment Is there a generalized Feuerbach point for an irregular non-Euclidean triangle?
I've found synthetic proof for it to the two dimensional non-Euclidean case. But article is in Russian. mccme.ru/free-books/matpros/mpd.pdf#page=155
Dec
26
answered What would you want to see at the Museum of Mathematics?
Nov
30
awarded  Yearling