Results 51 to 60 of about 2,640,083 (343)

Constant term identities extending the 𝑞-Dyson theorem [PDF]

Transactions of the American Mathematical Society, 1985
Andrews [1] has conjectured that the constant term in a certain product is equal to a q q -multinomial coefficient. This conjecture is a q q -analogue of Dyson’s conjecture [5], and has been proved, combinatorically, by Zeilberger and Bressoud [15].
Bressoud, D. M., Goulden, I. P.
openaire   +2 more sources

On commutativity of one-sided s-unital rings

International Journal of Mathematics and Mathematical Sciences, 1992
The following theorem is proved: Let r=r(y)>1, s, and t be non-negative integers. If R is a left s-unital ring satisfies the polynomial identity [xy−xsyrxt,x]=0 for every x,y∈R, then R is commutative. The commutativity of a right s-unital ring satisfying
H. A. S. Abujabal, M. A. Khan
doaj   +1 more source

A new application of Schrödinger-type identity to singular boundary value problem for the Schrödinger equation

Boundary Value Problems, 2019
In this paper, we present a modified Schrödinger-type identity related to the Schrödinger-type boundary value problem with mixed boundary conditions and spatial heterogeneities.
Bo Meng
doaj   +1 more source

A polynomial identity implying Schur’s partition theorem

Proceedings of the American Mathematical Society, 2020
11 ...
openaire   +2 more sources

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

International Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

Improved inclusion-exclusion identities via closure operators [PDF]

Discrete Mathematics & Theoretical Computer Science, 2000
Let (A v) v ∈ V be a finite family of sets. We establish an improved inclusion-exclusion identity for each closure operator on the power set of V having the unique base property.
Klaus Dohmen
doaj   +2 more sources

On the Carleman classes of vectors of a scalar type spectral operator

International Journal of Mathematics and Mathematical Sciences, 2004
The Carleman classes of a scalar type spectral operator in a reflexive Banach space are characterized in terms of the operator's resolution of the identity. A theorem of the Paley-Wiener type is considered as an application.
Marat V. Markin
doaj   +1 more source

Uniformly Primal Submodule over Noncommutative Ring

Journal of Mathematics, 2020
Let R be an associative ring with identity and M be a unitary right R-module. A submodule N of M is called a uniformly primal submodule provided that the subset B of R is uniformly not right prime to N, if there exists an element s∈M−N with sRB⊆N.The set
Lamis J. M. Abulebda
doaj   +1 more source

A tropical motivic Fubini theorem with applications to Donaldson–Thomas theory [PDF]

Duke mathematical journal, 2017
We present a new tool for the calculation of Denef and Loeser's motivic nearby fiber and motivic Milnor fiber: a motivic Fubini theorem for the tropicalization map, based on Hrushovski and Kazhdan's theory of motivic volumes of semi-algebraic sets.
J. Nicaise, S. Payne
semanticscholar   +1 more source

Current Tracking Adaptive Control of Brushless DC Motors

International Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García, Axel Coronado‐Andrade, Gerardo Espinosa‐Pérez, Luis Alvarez‐Icaza   +3 more
wiley   +1 more source