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Apr
6
comment Estimate parameters of a system on realtime defined as follows
welcome to Mathstackexchange. Please use Tex, e.g. put the equations into two dollar signs.
Apr
6
comment Show expectation is finite of an asymmetric walk
@Mid see the edit.
Apr
6
revised Show expectation is finite of an asymmetric walk
added 467 characters in body
Apr
6
answered Show expectation is finite of an asymmetric walk
Apr
5
reviewed Approve Trying to solve $A^TA = B$ where $B$ is known
Apr
5
reviewed Approve Solving Trigonometric Identities - Thinking questions
Apr
5
reviewed Approve Can you please check if my calculation below is correct. How can i simplify $\exp(e^t)$?
Apr
4
awarded  Unsung Hero
Apr
1
comment Strong law of large numbers with changing expected value
@did welcome back
Apr
1
reviewed Approve Find the flaw in my 1-page proof of the Four Color Theorem
Mar
31
comment Two fundamental questions about convexity of a function (number2)
Now it is okay. Seems good as you said. thx again.
Mar
31
comment Two fundamental questions about convexity of a function (number2)
@MichaelGrant thanks for your spiritual support. Will you lend me your chicken to love for some time too?=)
Mar
31
comment Two fundamental questions about convexity of a function (number2)
@ Daniel Fischer now both questions are closed and both have no answers. I mentioned in mathoverflow that it was asked in mathstackexchange.
Mar
31
revised Is there a unique saddle value for a convex/concave optimization?
deleted 176 characters in body
Mar
31
comment Is there a unique saddle value for a convex/concave optimization?
@MichaelGrant yes I mentioned it in the question. I thought I could get a reference there. I dont think that I will get any answer here since the question was asked a few days ago..
Mar
31
comment Is there a unique saddle value for a convex/concave optimization?
Let the domain be convex and compact and the function of interest be strictly convex and concave in its arguments. Will the saddle value be unique and if yes I will be happy to see a proof.
Mar
31
revised Tychonoff's theorem for $[0,1]^\mathbb{R}$
edited body
Mar
31
asked Is there a unique saddle value for a convex/concave optimization?
Mar
30
comment How to explain to a 14-year-old that $\sqrt{(-3)^2}$ isn't $-3$?
similar as you might explain it to a 13 year old.
Mar
29
revised Two fundamental questions about convexity of a function (number2)
added 2 characters in body