Existence and equivalence of finite binary projective groups
W. Peremans (1951)
Compositio Mathematica
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W. Peremans (1951)
Compositio Mathematica
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Bishop, Christopher J. (1996)
Annales Academiae Scientiarum Fennicae. Mathematica
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William James Harvey (1976-1977)
Séminaire Bourbaki
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Peter Vassilev Danchev, Patrick Keef (2008)
Archivum Mathematicum
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We prove that pure subgroups of thick Abelian -groups which are modulo countable are again thick. This generalizes a result due to Megibben (Michigan Math. J. 1966). Some related results are also established.
Gilbert Baumslag (1974)
Compositio Mathematica
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Weidong Gao, Dongchun Han, Guoyou Qian, Yongke Qu, Hanbin Zhang (2015)
Acta Arithmetica
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Let G be an additive finite abelian group, and let S be a sequence over G. We say that S is regular if for every proper subgroup H ⊆ G, S contains at most |H|-1 terms from H. Let ₀(G) be the smallest integer t such that every regular sequence S over G of length |S| ≥ t forms an additive basis of G, i.e., every element of G can be expressed as the sum over a nonempty subsequence of S. The constant ₀(G) has been determined previously only for the elementary abelian groups. In this paper,...
Franz G. Timmesfeld (1983)
Mathematische Zeitschrift
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Alan R. Camina (1979)
Mathematische Zeitschrift
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