Results 51 to 60 of about 832,966 (358)
International Journal of Adaptive Control and Signal Processing, EarlyView., 2023 Summary In this contribution, we propose a detailed study of interpolation‐based data‐driven methods that are of relevance in the model reduction and also in the systems and control communities. The data are given by samples of the transfer function of the underlying (unknown) model, that is, we analyze frequency‐response data.
Quirin Aumann, Ion Victor Gosea
wiley +1 more source
On the Duality of Regular and Local Functions
Mathematics, 2017 In this paper, we relate Poisson’s summation formula to Heisenberg’s uncertainty principle. They both express Fourier dualities within the space of tempered distributions and these dualities are also inverse of each other.
Jens V. Fischer
doaj +1 more source
On the regularity over positively graded algebras [PDF]
, 2006 We study the relationship between the Tor-regularity and the local-regularity over a positively graded algebra defined over a field which coincide if the algebra is a standard graded polynomial ring.
Roemer, Tim
core +3 more sources
Regular Homomorphisms and Regular Maps
European Journal of Combinatorics, 2002 AbstractRegular homomorphisms of oriented maps essentially arise from a factorization by a subgroup of automorphisms. This kind of map homomorphism is studied in detail, and generalized to the case when the induced homomorphism of the underlying graphs is not valency preserving.
Martin Škoviera +2 more
openaire +2 more sources
Remote SensingGold is a vital strategic resource for many countries. The Laozhaiwan area is an important gold resource base in Yunnan Province and even nationwide.
Qi Chen +11 more
doaj +1 more source
Advances in Nonlinear Analysis, 2014 We address the regularity of solutions to elliptic and parabolic equations of the form -Δu+b·∇u=0${- \Delta u+b\cdot \nabla u=0}$ and ut-Δu+b·∇u=0${u_t- \Delta u+b\cdot \nabla u=0}$ with divergence-free drifts b.
Ignatova Mihaela
doaj +1 more source
Linear syzygies, hyperbolic Coxeter groups and regularity [PDF]
, 2019 We show that the virtual cohomological dimension of a Coxeter group is essentially the regularity of the Stanley--Reisner ring of its nerve. Using this connection between geometric group theory and commutative algebra, as well as techniques from the ...
Constantinescu, Alexandru +2 more
core +2 more sources
A Fractional Laplace Equation: Regularity of Solutions and Finite Element Approximations [PDF]
SIAM Journal on Numerical Analysis, 2015 This paper deals with the integral version of the Dirichlet homogeneous fractional Laplace equation. For this problem weighted and fractional Sobolev a priori estimates are provided in terms of the Holder regularity of the data.
Gabriel Acosta, Juan Pablo Borthagaray
semanticscholar +1 more source
$F$-pure homomorphisms, strong $F$-regularity, and $F$-injectivity
, 2009 We discuss Matijevic-Roberts type theorem on strong $F$-regularity, $F$-purity, and Cohen-Macaulay $F$-injective (CMFI for short) property. Related to this problem, we also discuss the base change problem and the openness of loci of these properties.
Hashimoto, Mitsuyasu
core +3 more sources
Regularity of eigenstates in regular Mourre theory
Journal of Functional Analysis, 2011 The present paper gives an abstract method to prove that possibly embedded eigenstates of a self-adjoint operator $H$ lie in the domain of the $k^{th}$ power of a conjugate operator $A$. Conjugate means here that $H$ and $A$ have a positive commutator locally near the relevant eigenvalue in the sense of Mourre.
Møller, Jacob Schach +1 more
openaire +4 more sources