Lagrange's four-square theorem - Wikiwand

Chit-chat on Lagrange's four-square theorem

Lagrange's four-square theorem

Table 3 from Extended Lagrange's four-square theorem

PDF) A Simple Proof of Jacobi's Four-Square Theorem

GitHub - crteezy/java-lagrange-four-square-algorithm: Lagrange's four-square theorem algorithm using Java recursion

FERMAT'S FOUR SQUARES THEOREM Several years ago, after

GitHub - HechenHu/Four-Square_Representation: Using Rabin and Shallit's Algorithm to compute the four-square representation of a natural number as stated in Lagrange's Four-square Theorem.

Waring's Problem & Lagrange's Four-Square Theorem

Lagrange's Four-Square Theorem by Julian TSE

PDF) Sums of four squares and Waring's Problem