【摘要】 设u=[{S_i∶i∈I};U;{φ_i∶i∈I}]为一半群的融和,若V∈i∈I,U_i=Uψ在S_i中是几乎单式的,则U在半群S_i的融和U的自由积Лu·S_i中的同构胚的U*是πv*S_i的相关单式子半群。更多还原

【Abstract】 Let u=[{S_i, i∈I}]; U, {φ_i, i∈I}] be a amalgam of semigroups, it U_i=U_φ is almost unitary in S_i, for each i in Ⅰ, then the isomorphic copy U~* of U in π_u~* S_i the free product of the semigroup S: amalgamated U, is a relative unitary subsemigroup of π_u~* S_i.更多还原