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visits member for 2 years, 6 months
seen Aug 7 '13 at 5:49

Jul
2
awarded  Curious
Aug
7
comment A problem on a proof in a graph theory textbook
I see. "shortest" is the key. Thank you very much!
Aug
7
accepted A problem on a proof in a graph theory textbook
Aug
7
asked A problem on a proof in a graph theory textbook
Jul
28
accepted How to prove connectivity $\leq$ minimum degree?
Jul
27
comment How to prove connectivity $\leq$ minimum degree?
Thanks. Seem we have different definition of connectivity, but yours seems better for this question.
Jul
27
revised How to prove connectivity $\leq$ minimum degree?
added 125 characters in body
Jul
27
asked How to prove connectivity $\leq$ minimum degree?
May
6
comment Relation about Gateaux differentiable and differentiable
differentiable is what we meet in undergraduate calculus course (see, e.g., Def. 9.11 in P212 of baby Rudin). Gateaux differentiable (at x) is defined as follows: (1)the directional derivative $f'(x;v)$ exists for all $v\in\mathbb{R}^n$, (2)there exists (unique) $f_G'(x)\in\mathbb{R}^*$ such that $f'(x;v)=<f_G'(x),v>$ for all $v\in\mathbb{R}^n$, where $\mathbb{R}^*$ means the dual space of $\mathbb{R}^n$.
May
5
accepted Relation about Gateaux differentiable and differentiable
May
5
comment Relation about Gateaux differentiable and differentiable
Thank you!_____
May
5
asked Relation about Gateaux differentiable and differentiable
May
5
accepted A property about supremum and infimum
May
5
asked A property about supremum and infimum
May
4
accepted A question about definition of hyperplane
May
4
comment A question about definition of hyperplane
Thank you......
May
4
asked A question about definition of hyperplane
Mar
17
revised Ask for a question about independence
added 58 characters in body
Mar
16
accepted Ask for a question about independence
Mar
16
comment Ask for a question about independence
I answered my question, but I would like to give the credit to you.