The oldest unsolved problem in math. Do odd perfect numbers exist? ~science mathematics.pure Video 31:33 11 votes
Steffen's polyhedron is a flexible concave polyhedron. Euler thought such a shape was impossible. I also show infinitesimally flexible polyhedrons and bistable polyhedrons. ~science mathematics Video 8:51 13 votes
A mathematician has resolved the Sensitivity Conjecture, a nearly thirty-year-old problem in computer science ~science mathematics Article 1944 words 24 votes
Titans of mathematics clash over epic oroof of ABC Conjecture ~science mathematics Article 2880 words 7 votes
Mathematicians disprove conjecture made to save black holes ~space astronomy Article 1246 words 13 votes