Pythagorean Theorem

PDF) Lagrange's Four-Square Theorem

PDF) Algebraic Consequences of Jacobi's Two- and Four-Square Theorems

FERMAT'S FOUR SQUARES THEOREM Several years ago, after

PDF] New parametrization of $A^2+B^2+C^2=3D^2$ and Lagrange's four-square theorem

Solved Lagrange's four square theorem says every natural

Chapter 3 Greek Number Theory The Role of Number Theory Polygonal, Prime and Perfect Numbers The Euclidean Algorithm Pell's Equation The Chord and Tangent. - ppt download

Lagrange's Four-Square Theorem by Julian TSE

Sum of two squares theorem - Wikipedia

Lagrange and the four-square theorem - Archive ouverte HAL

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