On Generalized M ∗ − Groups
نویسندگان
چکیده
Let X be a compact bordered Klein surface of algebraic genus p ≥ 2 and let G = Γ∗/Λ be a group of automorphisms of X where Γ∗ is a noneuclidian chrystalographic group and Λ is a bordered surface group. If the order of G is 4q (q−2) (p−1), for q ≥ 3 a prime number, then the signature of Γ∗ is (0;+; [−]; {(2, 2, 2, q)}). These groups of automorphisms are called generalizedM∗-groups. In this paper, we give some results and examples about generalized M∗-groups. Then, we construct new generalized M∗groups from a generalized M∗-group G (or not necessarily generalized M∗-group).
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تاریخ انتشار 2010