Results 41 to 50 of about 112 (75)
Weak compactness cardinals for strong logics and subtlety properties of the class of ordinals
Journal of the London Mathematical Society, Volume 112, Issue 1, July 2025.Abstract Motivated by recent work of Boney, Dimopoulos, Gitman, and Magidor, we characterize the existence of weak compactness cardinals for all abstract logics through combinatorial properties of the class of ordinals. This analysis is then used to show that, in contrast to the existence of strong compactness cardinals, the existence of weak ...
Philipp Lücke
wiley +1 more source
To infinity and beyond: A general framework for scaling economic theories
Theoretical Economics, Volume 20, Issue 2, Page 511-542, May 2025.Many economic models incorporate finiteness assumptions that, while introduced for simplicity, play a real role in the analysis. We provide a principled framework for scaling results from such models by removing these finiteness assumptions. Our sufficient conditions are on the theorem statement only, and not on its proof. This results in short proofs,
Yannai A. Gonczarowski +2 more
wiley +1 more source
Skolem Number of Kagome Lattice Graphs [PDF]
A proper Skolem labelling of a graph $G$ is a function assigning a positive integer to each vertex of $G$ such that any two vertices assigned the same integer are that distance apart in the graph.
Carrigan, Braxton, Martone, Max
core +2 more sources
Distinguishing internally club and approachable on an Infinite interval
Bulletin of the London Mathematical Society, Volume 57, Issue 4, Page 1026-1039, April 2025.Abstract Krueger showed that PFA${\textsf {PFA}}$ implies that for all regular Θ⩾ℵ2$\Theta \geqslant \aleph _2$, there are stationarily many [H(Θ)]ℵ1$[H(\Theta)]^{\aleph _1}$ that are internally club but not internally approachable. From countably many Mahlo cardinals, we force a model in which, for all positive n<ω$n<\omega$ and Θ⩾ℵn+1$\Theta ...
Hannes Jakob, Maxwell Levine
wiley +1 more source
Cyclic packing designs and simple cyclic leaves constructed from Skolem-type sequences [PDF]
, 2016 A Packing Design, or a PD(v; k; λ) is a pair (V; β) where V is a v-set of points and β is a set of k-subsets (blocks) such that any 2-subset of V appears in at most λ blocks.
Alkasasbeh, Ahmad
core
Twisted rational zeros of linear recurrence sequences
Journal of the London Mathematical Society, Volume 111, Issue 3, March 2025.Abstract We introduce the notion of a twisted rational zero of a nondegenerate linear recurrence sequence (LRS). We show that any nondegenerate LRS has only finitely many such twisted rational zeros. In the particular case of the Tribonacci sequence, we show that 1/3$1/3$ and −5/3$-5/3$ are the only twisted rational zeros that are not integral zeros.
Yuri Bilu +4 more
wiley +1 more source
Strategy and Performance of Family Businesses: Comparison of Pakistan and the Czech Republic
Thunderbird International Business Review, Volume 67, Issue 1, Page 75-98, January/February 2025.ABSTRACT In this paper, we observe how effective the use of strategies is in relation to the objectives of family businesses. Data collected in spring 2024 by interviews were processed using DEA. Respondents were owners of small family businesses; 169 valid responses were obtained from each country.
Muhammad Kamal Subhani, Marie Mikušová
wiley +1 more source
International Transactions on Electrical Energy Systems, Volume 2025, Issue 1, 2025.Detachable smart systems contingent on unsteady renewable energy (RE) require timely planning and control in power demand and storage on daily scheduling. Power quality (PQ) denotes the fault‐free operation of the grids in various modes of household use.
Ladislav Zjavka, Santi A. Rizzo
wiley +1 more source
Deconstructible abstract elementary classes of modules and categoricity
Bulletin of the London Mathematical Society, Volume 56, Issue 12, Page 3854-3866, December 2024.Abstract We prove a version of Shelah's categoricity conjecture for arbitrary deconstructible classes of modules. Moreover, we show that if A$\mathcal {A}$ is a deconstructible class of modules that fits in an abstract elementary class (A,⪯)$(\mathcal {A},\preceq)$ such that (1) A$\mathcal {A}$ is closed under direct summands and (2) ⪯$\preceq$ refines
Jan Šaroch, Jan Trlifaj
wiley +1 more source
Rainbow Trees in Edge-Colored Complete Graphs and Block Decompositions of Almost Complete Graphs [PDF]
, 2017 This dissertation focuses on two problems, the first involving the existence of many edge-disjoint rainbow spanning trees in edge-colored complete graphs, and the second, creating a balanced sampling plan for a two-dimensional array, excluding contiguous
Perry, Katherine
core