Search results for "Projective cover"

showing 3 items of 3 documents

On the level of projective spaces

1987

Discrete mathematicsPure mathematicsCollineationProjective unitary groupGeneral MathematicsComplex projective spaceProjective coverProjective spaceProjective planeQuaternionic projective spacePencil (mathematics)MathematicsCommentarii Mathematici Helvetici
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A characterization of Baer cones in finite projective spaces

1985

Pure mathematicsCollineationComplex projective spaceMathematical analysisProjective line over a ringProjective coverProjective spaceGeometry and TopologyProjective planeFano planeQuaternionic projective spaceMathematicsGeometriae Dedicata
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Near abelian profinite groups

2012

Abstract A compact p-group G (p prime) is called near abelian if it contains an abelian normal subgroup A such that G/A has a dense cyclic subgroup and that every closed subgroup of A is normal in G. We relate near abelian groups to a class of compact groups, which are rich in permuting subgroups. A compact group is called quasihamiltonian (or modular) if every pair of compact subgroups commutes setwise. We show that for p ≠ 2 a compact p-group G is near abelian if and only if it is quasihamiltonian. The case p = 2 is discussed separately.

Pure mathematicsProfinite groupApplied MathematicsGeneral Mathematicstopologically quasihamiltonian groupProjective covermodular groupcompact groupsSettore MAT/03 - GeometriaAbelian groupMathematicspro-$p$-group
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