Definition from Wiktionary, the free dictionary
bidouble (not comparable)
- (mathematics) Acting as a finite flat Galois morphism with Galois group (Z/2)²-.
2016, Alice Garbagnati, “Smooth double covers of K3 surfaces”, in arXiv:
- We give explicit examples of surfaces with Kodaira dimension 1 and 2 obtained as double cover of K3 surfaces and we describe some of them as bidouble cover of rational surfaces.