First Shape Found That Can’t Pass Through Itself | Quanta Magazine

After more than three centuries, a geometry problem that originated with a royal bet has been solved.

Why haven't quantum computers factored 21 yet?

Craig Gidney's computer science blog

A convex polyhedron without Rupert's property

A three-dimensional convex body is said to have Rupert's property if its copy can be passed through a straight hole inside that body. In this work we construct a polyhedron which is provably not Rupert, thus we disprove a conjecture from 2017. We also find a polyhedron that is Rupert but not locally Rupert.

Busy Beaver Hunters Reach Numbers That Overwhelm Ordinary Math | Quanta Magazine

The quest to find the longest-running simple computer program has identified a new champion. It’s physically impossible to write out the numbers involved using standard mathematical notation.

Mathematicians Hunting Prime Numbers Discover Infinite New Pattern for Finding Them

Using a notion called integer partitions, mathematicians have discovered a new way to detect prime numbers while also connecting two areas of math in an unexpected way

Math Mondays - Monsky's Theorem

Lemma for FTGT - Susam's Quick Notes

Student-produced mathNEWS turns 50 | Mathematics

mathNEWS, the freewheeling Faculty of Math undergrad newsletter, turns 50 today. The first issue, published January 25, 1973, was introduced as an informal alternative to existing student publications, containing “not much math and even less news.”

Tinkertoy Models Produce New Geometric Insights | Quanta Magazine

An upstart field that simplifies complex shapes is letting mathematicians understand how those shapes depend on the space in which you visualize them.