島根大学理学部
ISSN:0387-9925
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島根大学理学部紀要 21
1987-12-25 発行
一般化された逆[*-]半群の自由積と融合
Free Products and Amalgamation of Generalized Inverse [*-]Semigroups
今岡 輝男
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内容記述（抄録等）
The author showed that the class of [left, right] nonnal bands has the stong amalgamation property [4]. In his paper [1], T. E. Hall proved that the class of [left, right] generalized inverse semigroups has the strong amalgamation property by using the concept of a bundled semilattice which is firstly introduced in [7]. By similar argument, we show that the classes of normal *-bands and generalized inverse *-semigroups have the strong amalgamation property. Also we give the structures of normal *-bands and generalized inverse *-semigroups and the free products in the variety of normal *-bands.
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