chain homomorphism

chain homomorphism

[′chān ‚hō·mō′mȯr‚fiz·əm]
(mathematics)
A sequence of homomorphisms ƒ n : CnDn between the groups of two chain complexes such that ƒn-1 dn = n ƒn where dn and n are the boundary homomorphisms of {Cn } and {Dn } respectively.