New posts in math-history

Why do the French count so strangely?

Is there any branch of Mathematics which has no applications in any other field or in real world?

A "new" general formula for the quadratic equation?

Good books on Math History

Is there a great mathematical example for a 12-year-old?

Theorems' names that don't credit the right people

What is the oldest open problem in geometry?

How was the Monster's existence originally suspected?

Origin of the dot and cross product?

How was the normal distribution derived?

What does the mysterious constant marked by C on a slide rule indicate?

Theorem that von Neumann proved in five minutes.

Conjectures (or intuitions) that turned out wrong in an interesting or useful way

Why is a full turn of the circle 360°? Why not any other number?

General request for a book on mathematical history, for a VERY advanced reader.

Why does Friedberg say that the role of the determinant is less central than in former times?

Paul Erdos's Two-Line Functional Analysis Proof

Mathematically, why was the Enigma machine so hard to crack?

Results that came out of nowhere.

Is there any conjecture that has been proved to be solvable/provable but whose direct solution/proof is not yet known?