User Alexander Kuleshov - MathOverflow

Alexander Kuleshov

Member for 10 years, 8 months
Last seen more than 2 years ago

Moscow, Россия

7 Questions

Score Activity Newest Views

10 votes

2 answers

1k views

Prove that the Dirichlet eta function is monotonic

asked Sep 12, 2014 at 15:39

4 votes

3 answers

849 views

Compact definition of ordinals

asked Sep 17, 2019 at 21:42

3 votes

2 answers

600 views

A weak definition of multiple differentiability of a function of several variables

asked Jan 26, 2020 at 18:16

2 votes

0 answers

235 views

Explicit formula for $\sin\frac{\alpha}{3}$ [closed]

asked Jan 10, 2015 at 21:32

2 votes

1 answer

328 views

Intermediate value theorem for the Jacobian determinant restricted to a curve

asked Mar 27, 2014 at 20:28

1 vote

0 answers

184 views

A non-differentiable function $f(x,y)$ with bounded $f_x$, $f_y$, $f_{xx}$ and $f_{yy}$

asked Jul 19, 2021 at 3:35

1 vote

0 answers

260 views

A sufficient condition for multiple differentiability of a function of several variables

asked Oct 19, 2021 at 1:13