Tensor products of several effect algebras and their representability are discussed.It is proved that any two tensor products of two effect algebras with respect to different bimorphisms are isomorphic.By constructing proper bimorphisms,the tensor products of effect algebras{0,1} and E,Cm(a) and Cn(b),C2(x) and C4(y,z),C2(x) and C′4(y,z) are given.Obtained results show that {0,1}E is representable if and only if E is representable,both Cm(a)Cn(b) and C2(x)C4(y,z) are representable,but C2(x)C′4(y,z) is not representable.

tensor product; effect algebra; representability