数论代考, 四平方和定理The four square theorem 代写

Euler's four-square identity

Jacobi's four-square theorem

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

Solved Lagrange's four square theorem says every natural

Pythagorean Theorem

Lagrange's Four-Square Theorem by Julian TSE

Proving the Pythagorean Theorem. Some algebraic and geometric proofs of…, by Michele Diodati, Not Zero

Waring's Problem -- from Wolfram MathWorld

MathType - Lagrange's four-square theorem states that every natural number can be represented as the sum of four integer squares. Proved by Joseph Louis #Lagrange in 1770, it can be regarded as

An Independent Quaternion Proof of Jacobi's Four Square Theorem