Results 1 to 10 of about 327 (80)
Ultracoproduct Continua and their Regular Subcontinua [PDF]
, 2016 We continue our study of ultracoproduct continua, focusing on the role played by the regular subcontinua—those subcontinua which are themselves ultracoproducts.
Bankston, Paul
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Duality theorems for stars and combs IV: Undominating stars [PDF]
, 2022 In a series of four papers we determine structures whose existence is dual, in the sense of complementary, to the existence of stars or combs from the well-known star—comb lemma for infinite graphs.
Bürger, Carl, Kurkofka, Jan
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Disjoint Open Subsets of the Remainder of the Freudenthal Compactification<数学・自然科学> [PDF]
, 2012 It is well-known that the Stone-Čech remainder ßℕ-ℕ of the discrete space of cardinality ℵ0 has a collection of cardinality c containing of pairwise disjoint non-empty open subsets of ßℕ-ℕ.
28358, キムラ, タカシ, 木村, 孝
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Duality theorems for stars and combs I: Arbitrary stars and combs [PDF]
, 2022 Extending the well-known star–comb lemma for infinite graphs, we characterise the graphs that do not contain an infinite comb or an infinite star, respectively, attached to a given set of vertices.
Bürger, Carl, Kurkofka, Jan
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Topics in Persistent Homology: From Morse Theory for Minimal Surfaces to Efficient Computation of Image Persistence [PDF]
, 2023 We study some problems and develop some theory related to persistent homology, separated into two lines of investigation. In the first part, we introduce lifespan functors, which are endofunctors on the category of persistence modules that filter out ...
Schmahl, Maximilian
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Topological and geometric inference of data [PDF]
, 2020 The overarching problem under consideration is to determine the structure of the subspace on which a distribution is supported, given only a finite noisy sample thereof.
Goucher, Adam P
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The Schutzenberger Product for Syntactic Spaces [PDF]
, 2016 Starting from Boolean algebras of languages closed under quotients and using duality theoretic insights, we derive the notion of Boolean spaces with internal monoids as recognisers for arbitrary formal languages of finite words over finite alphabets ...
GEHRKE M, PETRISAN D, REGGIO L
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Compactifications of Product Spaces<数学・自然科学> [PDF]
, 2015 Let X be a compact metric space and let Y be a non-compact, locally compact metric space. In this paper we give conditions on X and Y which characterize the product space X × Y having all compact metric spaces as remainders.textapplication ...
28472, キムラ, タカシ, 木村, 孝
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On indecomposability of $\beta X$
, 2018 The following is an open problem in topology: Determine whether the Stone-\v{C}ech compactification of a widely-connected space is necessarily an indecomposable continuum.
Lipham, David Sumner
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The Energy Sector and Energy Policy of the Czech Republic [PDF]
, 2013 The book The Energy Sector and Energy Policy of the Czech Republic is divided into eight chapters. The first describes the key actors and the legislative framework of the energy sector of the Czech Republic, including an analysis of the Government, the ...
Vlček Tomáš, Černoch Filip
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