Complexity of computing complex zeros of structured polynomial systems

What does universal mean? What is its scope? And how does it relate to undecidability?

Tantalizing patterns of closed curves on surfaces which became theorems

Dynamic programming and Hopf algebras

Post-Lie algebras and affine connections

Deep learning from the perspective of optimal control, stable numerical methods for ODEs and group equivariance

Forest formulas and the Magnus operator

The Value of Errors in Proofs (a fascinating journey from Turing's 1936 seminal R ≠ RE to the 2020 breakthrough of MIP* = RE)

Gathering chestnuts of math related to fluid motion

An introduction to graph limits