Results 31 to 40 of about 1,724,110 (280)
Classification and Prediction of Topological Insulators by Using the Density of States
MathematicsIn order to characterize topological insulators it is customary to use representations of the electronic structure, such as the band structure, where the energy of electrons is represented as a function of their momenta.
Alejandro Díaz-Nadales +3 more
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Theoretical and Computational Methods to Resistance Distances in Novel Graphs Operations
IEEE Access, 2019 Motivated by the recent research on the computation of resistance distance, this paper aims to compute resistance distance in two classes of graphs, which are generated by three graphs.
Li Zhang, Jia-Bao Liu
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Inverse limits of solvable groups [PDF]
Proceedings of the American Mathematical Society, 1963 In this paper we generalize to groups of Galois type some results of P. Hall on finite solvable groups [l; 2; 3]. We need, in a modified form, some results of van Dantzig: the definition of supernatural numbers (which are related to van Dantzig's universal numbers) and Theorem 5, which he proved for ordinary ?>-Sylow subgroups [6].
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, 2021 Classically, an abelian group $G$ is said to be slender if every homomorphism from the countable product $\mathbb Z^{\mathbb N}$ to $G$ factors through the projection to some finite product $\mathbb Z^n$. Various authors have proposed generalizations to non-commutative groups, resulting in a plethora of similar but not completely equivalent concepts ...
Conner, Gregory +3 more
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Inverse Synthetic Aperture Radar Sparse Imaging Exploiting the Group Dictionary Learning
Remote Sensing, 2021 Sparse imaging relies on sparse representations of the target scenes to be imaged. Predefined dictionaries have long been used to transform radar target scenes into sparse domains, but the performance is limited by the artificially designed or existing ...
Changyu Hu +3 more
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Perturbation of Dual Group Generalized Inverse and Group Inverse
SymmetrySymmetry plays a crucial role in the study of dual matrices and dual matrix group inverses. This paper is mainly divided into two parts. We present the definition of the spectral norm of a dual real matrix A^, (which is usually represented in the form A^=A+εA0, A and A0 are, respectively, the standard part and the infinitesimal part of A^) and two ...
Tianhe Jiang, Hongxing Wang, Yimin Wei
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Generalized inverses over integral domains. II. group inverses and Drazin inverses
Linear Algebra and its Applications, 1991 This is a continuation of an earlier paper by the authors [ibid. 140, 181--196 (1990; Zbl 0712.15004)] on generalized inverses over integral domains. The main results consist of necessary and sufficient conditions for the existence of a group inverse, a new formula for a group inverse when it exists, and necessary and sufficient conditions for the ...
Manjunatha Prasad, K. +2 more
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Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
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Gonadal Dysfunction in Wolfram Syndrome: A Prospective Study
DiagnosticsBackground: Wolfram syndrome (WFS), also known as DIDMOAD, is a rare monogenic neurodegenerative disorder characterized by four key components: non-autoimmune insulin-dependent diabetes mellitus (DM), optic atrophy, sensorineural hearing loss, and ...
Gema Esteban-Bueno +1 more
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, 2018 In this two-part paper, we present a novel framework and methodology to analyze data from certain image-based biochemical assays, e.g., ELISPOT and Fluorospot assays.
Jaldén, Joakim, Pla, Pol del Aguila
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