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Related papers: On non-Baire sets in category bases

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In this paper, we intend to show that under not too restrictive conditions, results much stronger than the one obtained earlier by Hejduk could be established in category bases.

General Topology · Mathematics 2021-09-14 Sanjib Basu , Atasi Deb Ray , Abhit Chandra Pramanik

In this paper, we deal with non-Baire rare sets in category bases which forms $\aleph_0$-independent family, where a rare set is a common generalization of both Luzin and Sierpinski set.

General Topology · Mathematics 2024-09-04 Sanjib Basu , Abhit Chandra Pramanik

Michalski gave a short and elegant proof of a theorem of A. Kumar which states that for each set A in R, there exists a subset B of A which is full in A and such that no distance between points in B is a rational number. He also proved a…

Functional Analysis · Mathematics 2022-08-16 Sanjib Basu , Abhit Chandra Pramanik

This paper presents a generalized version of a theorem of Grzegorek and Labuda in category bases and also endeavours to establish a variant formulation of the same in Marczewski structures.

General Topology · Mathematics 2025-12-23 Sanjib Basu , Navdeep Tamang

In this paper, we present an interesting application of Baire's category theorem.

General Topology · Mathematics 2017-03-24 Yongjie Shi , Chengjie Yu

Based on conditional set theory, we study conditional weak topologies, extending some well-known results to this framework and culminating with the proof of conditional versions of Eberlein-\v{S}mulian and Amir-Lindenstrauss Theorems. In…

Functional Analysis · Mathematics 2016-10-03 José Miguel Zapata

We study the class of Uglov bipartitions and prove a generalization of a conjecture by Dipper, James and Murphy. We give two consequences concerning the computation of canonical bases in affine type A and the description of decomposition…

Representation Theory · Mathematics 2019-03-05 Nicolas Jacon

Here we unify two results of Steinhaus and their corresponding category analogues by extending them in the settings of category bases. We further show that in any perfect translation base, every abundant Baire set contains a full subset for…

General Topology · Mathematics 2022-06-30 Sanjib Basu , Abhit Chandra Pramanik

We want to give a construction as simple as possible of a Borel subset of a product of two Polish spaces. This introduces the notion of potential Wadge class. Among other things, we study the non-potentially closed sets, by proving…

Logic · Mathematics 2007-10-02 Dominique Lecomte

In this paper, we give generalized version in category bases of a result of Kharazishvili dealing with absolute nonmeasurability of the Minkowski sum of certain universal measure zero sets which were based on an earlier result of Erdos,…

Functional Analysis · Mathematics 2023-08-15 Sanjib Basu , abhit Chandra Pramanik

We prove the Decomposability Conjecture for functions of Baire class $2$ on a Polish space to a separable metrizable space. This partially answer an important open problem in descriptive set theory.

Logic · Mathematics 2021-07-01 Longyun Ding , Takayuki Kihara , Brian Semmes , Jiafei Zhao

A theory of matchings for finite subsets of an abelian group, introduced in connection with a conjecture of Wakeford on canonical forms for homogeneous polynomials, has since been extended to the setting of field extensions and to that of…

Combinatorics · Mathematics 2026-02-03 Mohsen Aliabadi , Jozsef Losonczy

We prove the generic base change theorem for stacks, and give an exposition on the lisse-analytic topos of complex analytic stacks, proving some comparison theorems between various derived categories of complex analytic stacks. This enables…

Algebraic Geometry · Mathematics 2018-03-02 Shenghao Sun

We introduce a broader class of nonassociative Ore extensions that unifies and generalizes several earlier constructions. We prove generalizations of Hilbert's Basis Theorem for this class, showing that they arise immediately from the…

Rings and Algebras · Mathematics 2025-12-03 Per Bäck , Masood Aryapoor

Ulm's Theorem presents invariants that classify countable abelian torsion groups up to isomorphism. Barwise and Eklof extended this result to the classification of arbitrary abelian torsion groups up to $L_{\infty \omega}$-equivalence. In…

Logic · Mathematics 2015-07-24 Carol Jacoby , Peter Loth

We extend some classical constructions in commutative algebra to the setting of modules over orders in (non-commutative) semisimple algebras. Our theory incorporates, inter alia, `reduced' versions of the notions of higher Fitting…

Number Theory · Mathematics 2025-09-16 David Burns , Takamichi Sano

Schur's Theorem and its generalisation, Baer's Theorem, are distinguished results in group theory, connecting the upper central quotients with the lower central series. The aim of this paper is to generalise these results in two different…

Group Theory · Mathematics 2020-12-22 Guram Donadze , Xabier García-Martínez

We prove a Noether-Deuring theorem for the derived category of bounded complexes of modules over a Noetherian algebra.

Representation Theory · Mathematics 2012-01-16 Alexander Zimmermann

We give a proof of Yekutieli's global algebraic deformation quantization result which does not rely on the choice of local sections of the bundle of affine coordinate systems. Instead we use an argument inspired by algebraic De Rham…

Algebraic Geometry · Mathematics 2007-05-23 Michel Van den Bergh

We instal homological algebra, including derived functors, on certain non-additive categories like categories of pointed CW-complexes, modules of monoids or sheaves thereof. We apply this theory to Monoid schemes and sheaves on them,…

Number Theory · Mathematics 2017-09-04 Anton Deitmar
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