4,129 reputation
821
bio website shapetales.wordpress.com
location Prague, Czech Republic
age 28
visits member for 3 years, 10 months
seen yesterday

Math PhD. student and functional programming enthusiast.


Jun
2
revised Poincare dual of unit circle
Added another explanation
Jun
2
revised Poincare dual of unit circle
Added definition of Poincare dual
Jan
14
revised How do I maximize $|t-e^z|$, for $z\in D$, the unit disk?
Replaced the picture
Jan
5
revised Mirror point with respect to Riemann circle (Möbius transformation)
Fixed the mapping argument
Jan
4
revised “Proof” that $g(t) = (t,t,t,…)$ is not continuous with uniform topology
Removed the wrong remark about the box topology.
Jan
4
revised “Proof” that $g(t) = (t,t,t,…)$ is not continuous with uniform topology
Added explanation of unopenness
Dec
19
revised Find all positive integers $n$ s.t. $3^n + 5^n$ is divisible by $n^2 - 1$
added explanation
Dec
18
revised Aplanar covering of $S^1 \vee S^1$?
Found all aplanar finite degree coverings
Dec
11
revised Show that the function $u(x)=1 \in W^{m,\ 2}(\Omega)$, but not in $W_0^{m,\ 2}(\Omega)$
Fixed Sobolev indices
Sep
26
revised Clarifying one the related formulas of Binomial Theorem.
added 292 characters in body
Sep
26
revised Equivalence to properly discontinuous action
Fixed a subscript typo
Sep
26
revised Existence of a Lagrange multiplier (Euler Lagrange equations + holonomic constraints )
Fixed the Lagrange multiplier equation
Mar
13
revised intersection form of $CP^2$
Added a concrete explanation
Feb
13
revised How to prove this result about connectedness?
Fixed a letter switch
Feb
12
revised On surjectivity of exponential map for Lie groups
More detailed proof of exp being closed and open
Feb
6
revised Question about a functional equation
Added further discussion upon request
Jan
18
revised Computing derivative $x^{x^x}$
Fixed an incorrect formula
Jan
18
revised Multiple Choice question about a continuous function
Added further discussion
Jan
14
revised Challenging combinatorial problem with balls and boxes
Fixed a typo
Sep
10
revised A matrix is diagonalizable, so what?
Better wording, fixed typos