in 2005, a. abdollahi and a. rejali, studied the relations betweenparadoxical decomposition and configuration for semigroups. in thepresent paper, we introduce one other concept of amenability typeon semigroups and groups which includes amenability of semigroupsand inner-amenability of groups. we have extend the previous knownresults to semigroups and groups satisfying this concept.

Correction of complex deformities is a challenging procedure. Long-term wearing of a fixator after correction and lengthening are inconvenient and has a high rate of complication. The goals of the surgical treatment in the presented case were: (1) correction of the deformity and lengthening of the left leg by the Taylor spatial frame (TSF, Smith and Nephew, Marl, Germany); (2) reduction in the ...

Ab,stract—Concept learning and learning .strategies of pigeons were titanipnkited in a ntatching-to-sampie task. Groups of 4 pigeons responded either 0. 1. W. or 20 times to a sample stimulus, and then chose between a matching cotnparison stimulus and a ttonmatching comparison stimulus. Tests with unfamiliar arrangements of the three training stimuli .showed that learning n-as not hy if-then ru...

The adverb ”then” is among the most frequent English temporal adverbs, being also capable of filling a variety of semantic roles. The identification of anaphoric usages of ”then” is important for temporal expression resolution, while the temporal relationship usage is important for event ordering. Given that previous work has not tackled the identification and temporal resolution of anaphoric ”...

The concept of dominion (in the sense of Isbell) is investigated in the context of categories of groups, and their basic properties are established. They are then studied in the variety of metabelian groups. It is shown that the dominion of a subgroup in the variety of metabelian groups may be strictly larger than the subgroup itself. Section