Abstract A complex structure on a real vector space V is a linear endomorphism J of V such that J2 = - 1, where I stands for the identity transformation of V. A real vector space with a complex structure can be given the structure of a complex vector space.
Luis A. CorderoMarisa FernándezRaúl IbáñezLuis Ugarte
Shigeru IshiharaMariko Konishi
Antonio J. Di ScalaDaniele Zuddas