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Mar
7
revised pseudoinverse under change of norm
complete rewrite
Mar
7
accepted What can be said about the minimizer of $\| b - A x \| ^2+ \| x \|^2$?
Mar
7
asked pseudoinverse under change of norm
Mar
7
asked What can be said about the minimizer of $\| b - A x \| ^2+ \| x \|^2$?
Mar
6
asked Mappings preserving convex polyhedra
Mar
4
comment An variation of “Lk” in simplicial complexes
@StefanH.: Yes, thanks.
Mar
4
revised An variation of “Lk” in simplicial complexes
edited body
Mar
4
asked An variation of “Lk” in simplicial complexes
Feb
23
awarded  Popular Question
Feb
13
comment How can not-equals be expressed as an inequality for a linear programming model
It is intutive it does not work, because polyhedrons are convex and closed, while not-equals correspond to non-convex open regions.
Feb
13
asked fundamental theorem of linear inequalities
Feb
1
accepted Expansion of $x^{-1/2}$ at $0$
Feb
1
revised Expansion of $x^{-1/2}$ at $0$
clarification
Feb
1
asked Expansion of $x^{-1/2}$ at $0$
Jan
29
comment Approaches to integrate $\int_0^1 \frac{x}{\sqrt{a+bx+cx^2}} dx$
Thanks, that got me on the right track.
Jan
29
asked Approaches to integrate $\int_0^1 \frac{x}{\sqrt{a+bx+cx^2}} dx$
Jan
28
accepted If A $\subset S^n$ has spherical diameter < $\pi$, then $S^n - A$ contains a closed semisphere.
Jan
27
comment If A $\subset S^n$ has spherical diameter < $\pi$, then $S^n - A$ contains a closed semisphere.
The original statement was blatantly wrong. I have editted the question into what I actually meant.
Jan
27
revised If A $\subset S^n$ has spherical diameter < $\pi$, then $S^n - A$ contains a closed semisphere.
corrected question
Jan
25
asked If A $\subset S^n$ has spherical diameter < $\pi$, then $S^n - A$ contains a closed semisphere.