Euler's four-square identity - Wikipedia
Por um escritor misterioso
Descrição
Lagrange's four-square theorem - Wikipedia
Euler's four-square identity - Wikipedia

Number theory - Wikiwand
Matrix (Mathematics) - Wikipedia, The Free Encyclopedia PDF, PDF, Determinant

Euler line - Wikipedia

Euler's Totient Function Brilliant Math & Science Wiki

Square number - Wikipedia

Euler's Formula Brilliant Math & Science Wiki

Euler's identity - Wikipedia
Degen's eight-square identity - Wikipedia
de
por adulto (o preço varia de acordo com o tamanho do grupo)