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Arboricity games: the core and the nucleolus
The arboricity of a graph is the minimum number of forests required to cover all its edges. In this paper, we examine arboricity from a...
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Arithmetic statistics and diophantine stability for elliptic curves
We study the growth and stability of the Mordell–Weil group and Tate–Shafarevich group of an elliptic curve defined over the rationals, in various...
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Jordan-Hölder Theorem with Uniqueness for Semimodular Lattices
In 2011 Czédli and Schmidt proved the strongest form of Jordan-Hölder theorem for lattices, which they called Jordan-Hölder theorem with uniqueness:...
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Incremental concept cognitive learning in dynamic formal contexts based on attribute partial order structure diagram
Partial order formal structure analysis (POFSA) is an emerging theory in the field of concept cognitive learning (CCL). Attribute partial order...
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Should We Embrace Impossible Worlds Due to the Flaws of Normal Modal Logic?
Some philosophers advance the claim that the phenomena of logical omniscience and of the indiscernibility of metaphysical statements, which arise in...
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Evolutes of conics in the quasi-hyperbolic and the hyperbolic plane
The evolute of a conic is a curve of order six and class four in the general case. This paper is an extension of Božić Dragun (Mathematica Pannonica...
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The construction of fuzzy linguistic attribute partial ordered structure diagram
In formal concept analysis, as a data visualization tool, attribute partial ordered structure diagram can effectively discover the partial order...
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Cattaneo-Christov Heat Flux and Thermal Radiation in MHD Nanofluid Flow over a Bi-directional Stretching/Shrinking Surface
Nanofluids have gained popularity due to their better thermophysical properties and usefulness in daily life such as electronic design, solar energy,...
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Linear Recurrence Sequences and Further Generalizations
In this chapter we examine the problem of generalizing Lucas’ sequences from the perspective of linear recurrences. We first derive a number of...
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Decomposing Economic Efficiency into Technical and Allocative Components: An Essential Property
We introduce two desirable properties concerning the allocative efficiency term in the decomposition of economic efficiency. Since Farrell, economic...
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Slim patch lattices as absolute retracts and maximal lattices
We prove that slim patch lattices are exactly the absolute retracts with more than two elements for the category of slim semimodular lattices with...
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Nineteen Fifty-Four: Kolmogorov’s New “Metrical Approach” to Hamiltonian Dynamics
We review Kolmogorov’s 1954 fundamental paper On the persistence of conditionally periodic motions under a small change in the Hamilton function ...
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A New Characterization of Sporadic Simple Group M22 via Its Vanishing Elements
For a finite group G , a vanishing element of G is an element g ∈ G such that χ ( g ) = 0 for some irreducible complex character χ of G . Denote by π e ( G )...
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Actor-Critic Reinforcement Learning Algorithms for Mean Field Games in Continuous Time, State and Action Spaces
This paper investigates mean field games in continuous time, state and action spaces with an infinite number of agents, where each agent aims to...
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In memoriam: Tomas Björk (1947–2021)
This article celebrates the legacy of Tomas Björk. As we reflect on Tomas’ life and career, we explore his personal and professional journey,...
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Numerical Verification of the Convexification Method for a Frequency-Dependent Inverse Scattering Problem with Experimental Data
AbstractThe reconstruction of physical properties of a medium from boundary measurements, known as inverse scattering problems, presents significant...
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An algebraic model for inversion and deletion in bacterial genome rearrangement
Inversions, also sometimes called reversals, are a major contributor to variation among bacterial genomes, with studies suggesting that those...
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The impact of dependencies between climate risks on the asset and liability side of non-life insurers
The aim of this paper is to examine the impact of dependencies between climate transition and physical risks on the default probability and...
