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Perfectly supportable semigroups are σ-discrete in each Hausdorff shift-invariant topology

Taras Banakh ; Igor Guran

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p. 1-8

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Operator inequalities of Jensen type

M. S. Moslehian ; J. Mićić ; M. Kian

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p. 9-21

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Group reflection and precompact paratopological groups

Mikhail Tkachenko

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p. 22-30

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Neighborhood base at the identity of free paratopological groups

Ali Sayed Elfard

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p. 31-36

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Cardinal invariants of paratopological groups

Iván Sánchez

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p. 37-45

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On unitary Cauchy filters on topological monoids

Boris G. Averbukh

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p. 46-59

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On pseudocompact topological Brandt λ 0 -extensions of semitopological monoids

Oleg Gutik ; Kateryna Pavlyk

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p. 60-79

The Polish Digital Mathematics Library