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Classification of the virtually cyclic subgroups of the pure braid groups of the projective plane
We classify the (finite and infinite) virtually cyclic subgroups of the pure
braid groups of the projective plane. The maximal finite
subgroups of are isomorphic to the quaternion group of order 8 if
, and to if . Further, for all , up to
isomorphism, the following groups are the infinite virtually cyclic subgroups
of : , and the amalgamated product .Comment: 15 page
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