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Universally divergent Fourier series via Landau's extremal functions
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- We prove the existence of functions $f\in A(\mathbb D)$, the Fourier series of which being universal...
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10.14712/1213-7243.2015.115
- 作 者：
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Gerd Herzog
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- 期刊标题：
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Commentationes mathematicae Universitatis Carolinae
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On nowhere first-countable compact spaces with countable $\pi$-weight
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- The minimum weight of a nowhere first-countable compact space of countable $\pi$-weight is shown to ...
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10.14712/1213-7243.2015.121
- 作 者：
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Jan van Mill
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- 期刊标题：
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Commentationes mathematicae Universitatis Carolinae
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Results on generalized models and singular products of distributions in the Colombeau algebra $\mathcal{G}(\mathbb R)$
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- Models of singularities given by discontinuous functions or distributions by means of generalized fu...
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10.14712/1213-7243.2015.114
- 作 者：
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Blagovest Damyanov
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- 期刊标题：
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Commentationes mathematicae Universitatis Carolinae
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Property $ \bf{(wL)}$ and the reciprocal Dunford-Pettis property in projective tensor products
- 摘要：
- A Banach space $X$ has the reciprocal Dunford-Pettis property ($RDPP$) if every completely continuou...
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10.14712/1213-7243.2015.126
- 作 者：
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Ioana Ghenciu
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- 期刊标题：
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Commentationes mathematicae Universitatis Carolinae
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On the relations between the central factor-module and the derived submodule in modules over group rings
- 摘要：
- A modular analogue of the well-known group theoretical result aboutfiniteness of the derived subgrou...
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10.14712/1213-7243.2015.136
- 作 者：
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Leonid A. Kurdachenk...
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- 期刊标题：
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Commentationes mathematicae Universitatis Carolinae
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Antiflexible Latin directed triple systems
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- It is well known that given a Steiner triple system one can define a quasigroup operation~$\cdot$ up...
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10.14712/1213-7243.2015.134
- 作 者：
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Andrew R. Kozlik
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- 期刊标题：
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Commentationes mathematicae Universitatis Carolinae
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Hardy and Cowling-Price theorems for a~Cherednik type operator on the real line
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- This paper is aimed to establish Hardy and Cowling-Price type theorems for the Fourier transform tie...
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10.14712/1213-7243.015.102
- 作 者：
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Mohamed Ali Mourou
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- 期刊标题：
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Commentationes mathematicae Universitatis Carolinae
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A remark on the approximation theorems of Whitney and Carleman-Scheinberg
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- We show that a $C^k$-smooth mapping on an open subset of $\mathbb R^n$, $k\in \mathbb N\cup\{0,\inft...
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10.14712/1213-7243.015.101
- 作 者：
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Michal Johanis
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- 期刊标题：
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Commentationes mathematicae Universitatis Carolinae
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The subspace of weak $P$-points of $\mathbb{N}^*$
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- Let $W$ be the subspace of $\mathbb N^*$ consisting of all weak $P$-points. It is not hard to see th...
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10.14712/1213-7243.2015.120
- 作 者：
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S. García-Ferreira
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- 期刊标题：
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Commentationes mathematicae Universitatis Carolinae
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A co-ideal based identity-summand graph of a commutative semiring
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- Let $I$ be a strong co-ideal of a commutative semiring $R$ with identity. Let $\Gamma_{I} (R)$ be a ...
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10.14712/1213-7243.2015.124
- 作 者：
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S. Ebrahimi Atani
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- 期刊标题：
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Commentationes mathematicae Universitatis Carolinae
