New posts in Sums Of Squares

Prove that if $p$ is an odd prime that divides a number of the form $n^4 + 1$ then $p \equiv 1 \pmod{8}$

Number of integer solutions of $x^2 + y^2 = k$

A generalization of partition function to the sums of squares

Sums of squares of primes

Lagrange four squares theorem

The number of solution of $x_1^2 + \cdots + x_k^2 \equiv \lambda \bmod q$

Many representations as a sum of three squares

Efficient computation of integer representation as a sum of three squares

Enumerating ways to decompose an integer into the sum of two squares