Short stories 3 - Perfect numbers

Oh, it's such a perfect number. I want to count it with you.

All part of Robin Wilson's 18-part series on the equations that add up to mathematics.

PS: we would also like to apologise for a slip of the tongue at 1.17 when Robin says 2 to the n is prime when he obviously means 2 to the n-1. However, the graphic is correct. Admin has been sacked (by Admin).

Short stories 2 - Once upon a time

Apologies for mentioning the Odyssey (no, not the film), but what can Homer's oral masterpiece teach us about engaging with the general public about science?

Global Existence and Nonlinear Stability of Finite-Energy Solutions of the Compressible Euler-Riesz Equations with Large Initial Data of Spherical Symmetry.
 Carrillo, J Charles, S Chen, G Yuan, D Commun Math Phys volume 407 issue 10 209 (2026) https://www.ncbi.nlm.nih.gov/pubmed/42668740
Correction: Interest rate models in decentralised lending protocols (Digital Finance, (2026), 8, 3, (40), 10.1007/s42521-026-00204-4)
 Cohen, S Sánchez-Betancourt, L Szpruch, Ł Digital Finance volume 8 issue 3 (01 Sep 2026)
Tunable asymmetric swimming in biflagellate microswimmers.
 Walker, B Moreau, C Robinson, T Xu, Z Goldman, D Gaffney, E Wan, K Journal of the Royal Society, Interface volume 23 issue 241 20260195 (Aug 2026)
fast-vollib: a fast implied volatility library for Python with NumPy, PyTorch, JAX and CUDA fused-kernel backends
 Saqur, R (28 Aug 2026)
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