Theorem of the Day has a 'new acquisition': Vaughan Pratt's Theorem

Theorem of the Day has a 'new acquisition': Strassen's Matrix Theorem

Theorem of the Day has a 'new acquisition': a Theorem on Rectangular Tensegrities

Theorem of the Day has an embryonic international listing of public events on mathematics to which everyone is welcome to submit items

Theorem of the Day has a 'new acquisition': the Piff-Welsh Theorem

Theorem of the Day has two 'new acquisitions': Sylvester's Law of Inertia and The Robinson-Schensted-Knuth Correspondence

Theorem of the Day has a 'new acquisition': Lieb's Square Ice Theorem

Theorem of the Day has a 'new acquisition': The Contraction Mapping Theorem

Theorem no. 70, on vertex-degree colourability of graphs, has been updated to reflect the striking reduction in the upper bound recently proved by Kalkowski, Karonski and Pfender

Theorem of the Day has a 'new acquisition': The Panarboreal Formula

Theorem of the Day has a 'new acquisition': The Sophomore's Dream

Theorem of the Day has a 'new acquisition': A Theorem of Schur on Real-Rootedness

Theorem of the Day has a 'new acquisition': Euclid's Prism

Theorem of the Day has a 'new acquisition': Woodall's Hopping Lemma

Theorem of the Day has a 'new acquisition': The Short Gaps Theorem

A new version of Theorem no. 90, Cardano's Cubic Formula, has been posted. The new version has a much more explicit example of how to use the formula to solve cubic equations.

Theorem of the Day has a 'new acquisition': de Moivre's Theorem

Theorem of the Day has a 'new acquisition': Euler's Partition Identity