New posts in Open Problems

Current state of Straus's illumination problem

Is the Gromov conjecture still open?

Torsion-freeness of two groups with 2 generators and 3 relators and Kaplansky Zero Divisor Conjecture

Open problems in Hopf algebras

A variant of Freiling's Axiom of Symmetry and a weak form of the Continuum Hypothesis in models where all sets of reals are Lebesgue measurable

Open problems in continued fractions theory

Open problems in Berkovich geometry

Determine or estimate the number of maximal triangle-free graphs on $n$ vertices

An integral related to the Euler gamma function

Open Problems in Algebraic Topology and Homotopy Theory