Results 21 to 30 of about 3,009,761 (286)

M-curves and symmetric products [PDF]

open access: yesProceedings - Mathematical Sciences, 2017
Let $(X , σ)$ be a geometrically irreducible smooth projective M-curve of genus $g$ defined over the field of real numbers. We prove that the $n$-th symmetric product of $(X , σ)$ is an M-variety for $n=2 ,3$ and $n\geq 2g -1$.
Biswas, Indranil, D'Mello, Shane
openaire   +3 more sources

Symmetric Formulas for Products of Permutations

open access: yesCoRR, 2022
We study the formula complexity of the word problem $\mathsf{Word}_{S_n,k} : \{0,1\}^{kn^2} \to \{0,1\}$: given $n$-by-$n$ permutation matrices $M_1,\dots,M_k$, compute the $(1,1)$-entry of the matrix product $M_1\cdots M_k$. An important feature of this function is that it is invariant under action of $S_n^{k-1}$ given by \[ (π_1,\dots,π_{k-1})(M_1 ...
He, William, Rossman, Benjamin
openaire   +6 more sources

Symmetric Presentations of Coxeter Groups [PDF]

open access: yes, 2011
We apply the techniques of symmetric generation to establish the standard presentations of the finite simply laced irreducible finite Coxeter groups, that is, the Coxeter groups of types An, Dn and En, and show that these are naturally arrived at purely ...
Fairbairn, Ben, Ben Fairbairn
core   +1 more source

Symplectic duality of Symmetric Spaces [PDF]

open access: yes, 2008
We show that between symmetric spaces of different types there exists a bi-symplectic map.
Loi, Andrea   +4 more
core   +1 more source

Symplecticity and relationships among the fundamental properties in linear optics

open access: yesAfrican Vision and Eye Health, 2010
Because of symplecticity the four   fundamental first-order optical properties of an optical system are not independent.  Relationships among them reduce the number of degrees of freedom of a system’s   transference from 16 to 10.
W. F. Harris
doaj   +1 more source

Symmetric subgroups in modular group algebras [PDF]

open access: yes, 2010
This preprint is translated from the original journal publication in Russian: A. Konovalov and A. Tsapok, Symmetric subgroups of the normalised unit group of the modular group algebra of a finite p-group, Nauk. Visn. Uzhgorod. Univ., Ser. Mat., 9 (2004),
Krivokhata, A. G., Konovalov, Alexander
core   +2 more sources

Correlators of the symmetric product orbifold

open access: yesJournal of High Energy Physics, 2020
We exploit null vectors of the fractional Virasoro algebra of the symmetric product orbifold to compute correlation functions of twist fields in the large N limit.
Andrea Dei, Lorenz Eberhardt
doaj   +1 more source

The quantum marginal problem for symmetric states: applications to variational optimization, nonlocality and self-testing

open access: yesNew Journal of Physics, 2021
In this paper, we present a method to solve the quantum marginal problem for symmetric d -level systems. The method is built upon an efficient semi-definite program that uses the compatibility conditions of an m -body reduced density with a global n ...
Albert Aloy, Matteo Fadel, Jordi Tura
doaj   +1 more source

Infinite symmetric products of rational algebras and spaces

open access: yesComptes Rendus. Mathématique, 2022
We show that the infinite symmetric product of a connected graded-commutative algebra over $\mathbb{Q}$ is naturally isomorphic to the free graded-commutative algebra on the positive degree subspace of the original algebra.
Hu, Jiahao, Milivojević, Aleksandar
doaj   +1 more source

Heterotropic regulation and negative homotropic cooperativity. [PDF]

open access: yesFEBS Open Bio
We identified a structural module common to some proteins that couple negative cooperativity with heterotropic regulation, two features that rarely coexist. These proteins are ring‐like and present an ordered asymmetry whereby noncontacting subunits are symmetric, and their tertiary structure differs from that of contacting subunits.
Morea V   +5 more
europepmc   +2 more sources

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