... In the case of a rotary map M, the group Aut(M) is transitive on darts, but if M is regular, then Aut(M) is transitive (indeed regular) on blades. ...
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Ссылки http://dfgm.math.msu.su/files/papers-sym/reg%20maps%20nonorientable%20surfaces.pdf -- 539.3 Кб -- 27.02.2008 Похожие документы
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... Also in this case, Aut M is transitive ( indeed regular ) on blades, and can be generated by the three reflections a, b and c. If the map M is orientable, then the elements R = ab and S = bc generate a normal subgroup of index 2 in Aut M, consisting of ...