A set {a, b, c, d} of four non-zero distinct polynomials in Z [i][X] is said to be a Diophantine D (4)-quadruple if the product of any two of its distinct elements increased by 4 is a square of …
Skup 1a, b, c, dl koji se sastoji od cetiri razlicita polinoma iz Z [i][X] naziva se polinomna D (4)-cetvorka ako je umnozak bilo koja dva razlicita elementa tog skupa uvecan za 4 kvadrat …