Title of article :
Pullback diagram of H*-algebras
Author/Authors :
KHANEHGIR, MAHNAZ islamic azad university - Department of Mathematics, ايران , AMYARI, MARYAM islamic azad university - Department of Mathematics, ايران , KHIBARY, MARZIEH MORADIAN islamic azad university - Department of Mathematics, ايران
Abstract :
In this paper we obtain some properties for the pullback diagram of H*-algebras. More precisely, we prove that the commutative diagram of H*-algebras and morphisms A_1 @ varphi_1 B_1 @VVpsi_1V @VVpsi_2V A_2 @ varphi_2 B_2 is pullback and ψ1 is an injection if and only if ψ1 is a surjection, ψ2 is an injection, and ker φ1 ∩ ker ψ1 = {0}.
Keywords :
H* , algebra , morphisms , pullback diagram , trace , class
Journal title :
Turkish Journal of Mathematics
Journal title :
Turkish Journal of Mathematics
