We prove that the set of limit groups is recursively enumerable, answering a question of Delzant. One ingredient of the proof is the observation that a finitely presented group with local retractions (à la Long and Reid) is coherent and, furthermore, there exists an algorithm that computes presentations for finitely generated subgroups. The other main ingredient is the ability to algorithmicall...

If p : Y → X is an unramified covering map between two compact oriented surfaces of genus at least two, then it is proved that the embedding map, corresponding to p, from the Teichmüller space T (X), for X , to T (Y ) actually extends to an embedding between the Thurston compactification of the two Teichmüller spaces. Using this result, an inductive limit of Thurston compactified Teichmüller sp...

effect of in order to test the memory state in patients with non-insulin dependent diabetes mellitus (niddm) after glycemic control, one-hundred patients referring to isfahan endocrine and metabolism research center were simply randomized. they were compared in point of memory state with one hundred cases as the control group. the wechsler memory scale test was utilized to evaluate the memory s...

this study is an attempt to answer three questions: first, whether there is a difference between the grammatical competence de- velopment of a group of children aged 2;6 vs. a group of children aged 3;6. second, whether there is a relationship between the children’s age and their mlu on the one hand and their speech and the caretakers’ speech on the other. third, whether or not the normal limit...