Results 11 to 20 of about 479 (182)

Fano schemes of determinants and permanents [PDF]

open access: yes, 2015
Let $D_{m,n}^r$ and $P_{m,n}^r$ denote the subschemes of $\mathbb{P}^{mn-1}$ given by the $r\times r$ determinants (respectively the $r\times r$ permanents) of an $m\times n$ matrix of indeterminates.
Chan, Melody, Ilten, Nathan
core   +1 more source

The Extremal Permanental Sum for a Quasi-Tree Graph

open access: yesComplexity, 2019
Let G be a graph and A(G) the adjacency matrix of G. The permanent of matrix (xI-A(G)) is called the permanental polynomial of G. The permanental sum of G is the sum of the absolute values of the coefficients of permanental polynomial of G. Computing the
Tingzeng Wu, Huazhong Lü
doaj   +1 more source

The cycle (circuit) polynomial of a graph with double and triple weights of edges and cycles

open access: yesElectronic Journal of Graph Theory and Applications, 2019
Farrell introduced the general class of graph polynomials which he called the family polynomials, or F-polynomials, of graphs. One of these is the cycle, or circuit, polynomial.
Vladimir R. Rosenfeld
doaj   +1 more source

Shearer's point process, the hard-sphere model and a continuum Lov\'asz Local Lemma [PDF]

open access: yes, 2017
A point process is R-dependent, if it behaves independently beyond the minimum distance R. This work investigates uniform positive lower bounds on the avoidance functions of R-dependent simple point processes with a common intensity.
Hofer-Temmel, Christoph
core   +4 more sources

A Note on the Permanental Roots of Bipartite Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2014
It is well-known that any graph has all real eigenvalues and a graph is bipartite if and only if its spectrum is symmetric with respect to the origin.
Zhang Heping, Liu Shunyi, Li Wei
doaj   +1 more source

Determinantal and permanental representation of q-Fibonacci polynomials

open access: yesQScience Connect, 2014
In this study, we show determinants and permanents of some Hessenberg matrices that give terms of polynomials .
TAŞYURDU, YASEMİN, GÜLTEKİN, İnci
openaire   +2 more sources

Per-Spectral Characterizations Of Some Bipartite Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2017
A graph is said to be characterized by its permanental spectrum if there is no other non-isomorphic graph with the same permanental spectrum. In this paper, we investigate when a complete bipartite graph Kp,p with some edges deleted is determined by its ...
Wu Tingzeng, Zhang Heping
doaj   +1 more source

Intracell interference characterization and cluster interference for D2D communication [PDF]

open access: yes, 2018
The homogeneous spatial Poisson point process (SPPP) is widely used for spatial modeling of mobile terminals (MTs). This process is characterized by a homogeneous distribution, complete spatial independence, and constant intensity measure. However, it is
Ekti, Ali Riza   +4 more
core   +3 more sources

Determinantal Processes and Independence

open access: yes, 2006
We give a probabilistic introduction to determinantal and permanental point processes. Determinantal processes arise in physics (fermions, eigenvalues of random matrices) and in combinatorics (nonintersecting paths, random spanning trees).
Hough, J. Ben   +3 more
core   +2 more sources

On permanental polynomials of certain random matrices [PDF]

open access: yesInternational Mathematics Research Notices, 2006
The paper addresses the calculation of correlation functions of permanental polynomials of matrices with random entries. By exploiting a convenient contour integral representation of the matrix permanent some explicit results are provided for several random matrix ensembles.
openaire   +2 more sources

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