dke

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Have any long-suspected irrational numbers turned out to be rational?

Mathematicians who were late learners?-list (2)

What are some examples of colorful language in serious mathematics papers?

Jokes in the sense of Littlewood: examples?

A binomial sum is divisible by p^2

Is there a dense subset of the real plane with all pairwise distances rational?

Why isn’t there a structure with two primes?

Hexagonal Triangular Squares

What are the connections between pi and prime numbers?

Computing (on a computer) higher ramification groups and/or conductors of representations.

Given a finite field $K$, what are the possible degrees of a polynomial $p\in K[x]$ such that $x\longmapsto p(x)$ is one-to-one?

Non-real constants

For which fields K is every subring of K…?

What is the size of the smallest rigid extension field of the complex numbers?

adding an n-th root to Q_p

Is there a notion of Galois extension for Z / p^2?

Open problems and known identities involving sums

Taming this Conway-type sequence

Modular congruences related to sums of Catalan numbers

When does a p-adic function have a Mahler expansion?

When is the extension defined by an Eisenstein polynomial galoisian or abelian or cyclic ?

Uniqueness in Composition of Polynomials

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