Results 41 to 50 of about 1,824,364 (240)
On MMSE and MAP Denoising Under Sparse Representation Modeling Over a Unitary Dictionary [PDF]
IEEE Transactions on Signal Processing, 2010 Among the many ways to model signals, a recent approach that draws considerable attention is sparse representation modeling. In this model, the signal is assumed to be generated as a random linear combination of a few atoms from a prespecified dictionary.
Javier Turek, I. Yavneh, Michael Elad
semanticscholar +1 more source
Irreducibility criterion for representations induced by essentially unitary ones (case of non-archimedean GL(n,A) [PDF]
, 2013 Let A be a finite dimensional central division algebra over a local non-archimedean field F. Fix any parabolic subgroup P of GL(n,A) and a Levi factor M of P.
Leclerc +9 more
core +3 more sources
Animals, 2022 The behavior of livestock on farms is the primary representation of animal welfare, health conditions, and social interactions to determine whether they are healthy or not.
Yongfeng Li +7 more
doaj +1 more source
McKay Centralizer Algebras [PDF]
Discrete Mathematics & Theoretical Computer Science, 2020 For a finite subgroup G of the special unitary group SU2, we study the centralizer algebra Zk(G) = EndG(V⊗k) of G acting on the k-fold tensor product of its defining representation V = C2.
Georgia Benkart, Tom Halverson
doaj +1 more source
European Physical Journal C: Particles and Fields, 2018 We discuss properties of fuzzy de Sitter space defined by means of algebra of the de Sitter group $$\text {SO}(1,4)$$ SO(1,4) in unitary irreducible representations.
Maja Burić +2 more
doaj +1 more source
Twirling channels have minimal mixed-unitary rank [PDF]
Linear Algebra and its Applications Volume 615 (2020) pp. 207-227, 2020 For a positive integer $d$ and a unitary representation $\rho:G\rightarrow\mathrm{U}(d)$ of a compact group $G$, the twirling channel for this representation is the linear mapping $\Phi: M_d\rightarrow M_d$ defined as $\Phi(X)=\int_{G}\mathrm{d}\mu(g)\,\rho(g)X\rho(g^{-1})$ for every $X\in M_d$, where $\mu$ is the Haar measure on $G$. Such channels are
arxiv +1 more source
Stellar Representation of Non-Gaussian Quantum States. [PDF]
Physical Review Letters, 2019 The so-called stellar formalism allows us to represent the non-Gaussian properties of single-mode quantum states by the distribution of the zeros of their Husimi Q function in phase space.
Ulysse Chabaud, D. Markham, F. Grosshans
semanticscholar +1 more source
Localization of unitary braid group representations [PDF]
, 2010 Governed by locality, we explore a connection between unitary braid group representations associated to a unitary $R$-matrix and to a simple object in a unitary braided fusion category. Unitary $R$-matrices, namely unitary solutions to the Yang-Baxter equation, afford explicitly local unitary representations of braid groups.
arxiv +1 more source
Direct dialling of Haar random unitary matrices
New Journal of Physics, 2017 Random unitary matrices find a number of applications in quantum information science, and are central to the recently defined boson sampling algorithm for photons in linear optics.
Nicholas J Russell +3 more
doaj +1 more source
Small eigenvalues of the staggered Dirac operator in the adjoint representation and Random Matrix Theory [PDF]
, 1999 The low-lying spectrum of the Dirac operator is predicted to be universal, within three classes, depending on symmetry properties specified according to random matrix theory. The three universal classes are the orthogonal, unitary and symplectic ensemble.
A.L. Kaehler +26 more
core +2 more sources