New posts in math-history

What is the legacy of Bourbaki?

Is there any mathematician who felt guilty for one of his math discoveries ever?

Is Hilbert's second problem about the real numbers or the natural numbers?

Who first explicitly noted that second-order logic is unaxiomatizable?

Who was V. Viskovatov?

Estimating the "size" of the mathematical research literature

Could Euclid have proven that real number multiplication is commutative?

Tensor Products and Von Neumann's Direct Multiplication

Why are $x$ and $y$ such common variables in today's equations? How did their use originate?

Volumes of cones, spheres, and cylinders

Exactly who popularized the modern definition of domain and codomain of functions?

When and where the concept of valid logic formula was defined?

Pick the right notation for calculus!

Original author of an exponential generating function for the Bernoulli numbers?

Ramanujan's False Claims

Any surviving contemporary manuscripts by ancient mathematicians?

Historical meaning and usage of determinant

History of $f \circ g$

What was the planned topic of Gödel's second paper on incompleteness?

Why did we settle for ZFC?