1,024 reputation
517
bio website
location
age
visits member for 2 years, 2 months
seen 1 hour ago

19h
awarded  Nice Question
Aug
24
asked Tangent bundle of the 2-sphere
Aug
22
asked Geometric interpretation of an integral inequality
Aug
22
comment Physical or geometric meaning of complex derivative?
Visual Complex Analysis by Tristan Needham might interest you.
Aug
20
comment How inequalities are made
@HagenvonEitzen Yes, I'm aware of that. But I would like to see a concrete example.
Aug
19
accepted How to prove this inequality without using Muirhead's inequality?
Aug
19
asked How to prove this inequality without using Muirhead's inequality?
Aug
18
asked How inequalities are made
Aug
18
asked Connection between arithmetic mean, geometric mean and sample variance
Aug
18
accepted Tensor product of duals
Aug
18
accepted Alternative solutions of an inequality problem
Aug
17
answered How to prove inequality $\frac{a}{a+bc}+\frac{b}{b+cd}+\frac{c}{c+da}+\frac{d}{d+ab}\ge 2$
Aug
17
answered How prove that $ 3(a^3+b^3)+1-3c\ge \frac{a^2+b^2-c^2+1-4c}{a+b}$?
Aug
16
asked Alternative solutions of an inequality problem
Aug
6
asked If a topological space $S$ is second-countable, must necessarily every quotient space of $S$ be second-countable?
Jul
31
revised Examples of continuous non-transitive group actions
added 29 characters in body
Jul
31
comment Examples of continuous non-transitive group actions
Ooops, I'll fix that.
Jul
31
asked Examples of continuous non-transitive group actions
Jul
21
comment Tensor product of duals
Yes, but I've only seen $V \sim V^*$ proven using dual bases.
Jul
21
comment Tensor product of duals
How do you prove $V \simeq V^*$ without referring to the basis of $V$?