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