New posts in Ho.History Overview

Who first defined _simply connected_, reference?

history of calculus of several variables

Did ancient mathematicians know Euler's characteristic for convex polyhedra?

Does anyone know what is the right reference for the following simple lemma from harmonic analysis?

Are there some other notions of "curvature" which measure how space curves?

Fourier transform of the unit sphere

Why are optimization problems often called "programs"?

What are good English-language sources for reading about the Luzin affair?

The Teichmüller's algebraic interpretation of $H^3$ in group cohomology

Fermat's proof for $x^3-y^2=2$