New posts in convex-analysis

Union of convex sets

Making sense out of "field", "algebra", "ring" and "semi-ring" in names of set systems

Relation between Positive definite matrix and strictly convex function

How to remember which function is concave and which one is convex?

If $(\nabla f(x)-\nabla f(y))\cdot(x-y)\geq m(x-y)\cdot(x-y)$, why is $f$ convex?

A tree of convex sets?

How can it be proved that the geometric mean function is concave?

Strictly convex function: how often can its second derivative be zero?

The conjugate function of infimal convolution

Convex hull of orthogonal matrices

Prove that the sum of convex functions is again convex.

Is the set of matrices with constrained condition numbers a convex set?

How to prove that $C = cc^T$ is not convex?

Proof: A function is convex iff it is convex when restricted to any line ..

Is KKT conditions necessary and sufficient for any convex problems?

How to prove that the closed convex hull of a compact subset of a Banach space is compact?

Is there a "global" convexity locally around a minimum?

About the inequality $rx^{r-1}\left(\sqrt{xy}-y\right)>x^{r}-y^{r}$ for $x>y>0$ and $r<0$

Limit of derivatives of convex functions

Consequence of concavity