Results 11 to 20 of about 187 (52)

A Study of Contact Detection between Noncircular Particles in Discrete Element Method

open access: yesAdvances in Materials Science and Engineering, Volume 2022, Issue 1, 2022., 2022
One of the key points of modeling noncircular particles in the discrete element method is the contact detection of particles. In this study, a general contact detection algorithm of two‐dimensional particles with analytic shape functions is provided.
Chengbo Li   +3 more
wiley   +1 more source

A Mathematical Model for a Transmissible Disease with a Variant

open access: yesJournal of Applied Mathematics, Volume 2022, Issue 1, 2022., 2022
The outbreak of the Coronavirus (COVID‐19) pandemic around the world has caused many health and socioeconomic problems, and the identification of variants like Delta and Omicron with similar and often even more transmissible modes of transmission has motivated us to do this study.
A. Otto, M. Amidou, Kamal Kumar
wiley   +1 more source

Evasive subspaces

open access: yesJournal of Combinatorial Designs, Volume 29, Issue 8, Page 533-551, July 2021., 2021
Abstract Let V denote an r‐dimensional vector space over F q n, the finite field of q n elements. Then V is also an r n‐dimension vector space over F q. An F q‐subspace U of V is ( h , k ) q‐evasive if it meets the h‐dimensional F q n‐subspaces of V in F q‐subspaces of dimension at most k.
Daniele Bartoli   +3 more
wiley   +1 more source

Subresultants with the Bézout Matrix

open access: yes, 2000
Colloque avec actes et comité de lecture. internationale.International audienceSubresultants are defined usually by means of subdeterminants of the Sylvester matrix.
Wang, Dongming, Hou, Xiaorong
core   +4 more sources

Multivariate subresultants in roots [PDF]

open access: yes, 2005
We give a rational expression for the subresultants of n+1 generic polynomials f1,…,fn+1 in n variables as a function of the coordinates of the common roots of f1,…,fn and their evaluation in fn+1.
Krick, T.   +8 more
core   +1 more source

Subresultants [PDF]

open access: yes, 2017
We formalize the theory of subresultants and the subresultant polynomial remainder sequence as described by Brown and Traub. As a result, we obtain efficient certified algorithms for computing the resultant and the greatest common divisor of ...
Yamada, Akihisa   +2 more
core   +2 more sources

Multivariate subresultants using Jouanolou matrices [PDF]

open access: yes, 2009
Earlier results expressing multivariate subresultants as ratios of two subdeterminants of the Macaulay matrix are extended to Jouanolou matrices. These matrix constructions are generalizations of the classical Macaulay matrices and involve matrices of ...
A. Szanto, Szanto, A.
core   +1 more source

Multivariate subresultants [PDF]

open access: yes, 1995
In this text, we will introduce the natural generalization of the so-called subresultants of two polynomials in one variable, to the case of s ≤ n homogeneous polynomials in n variables.
Chardin, Marc, Marc Chardin
core   +1 more source

A chain rule for subresultants [PDF]

open access: yes, 2001
Let I be an integral domain and let f, g, h be polynomials in x over I with positive degrees m, n and k. McKay and Wang proved that res(f∘h,g∘h)=[lc(h)mnres(f,g)]k where res(f,g) denotes the resultant of f and g, and lc(h) denotes the leading coefficient
Charles Ching-An Cheng   +1 more
core   +1 more source

On the irreducibility of multivariate subresultants [PDF]

open access: yes, 2004
Let $P_1,\ldots,P_n$ be generic homogeneous polynomials in $n$ variables of degrees $d_1,\ldots,d_n$ respectively. We prove that if $\nu$ is an integer satisfying ${\sum_{i=1}^n d_i}-n+1-\min\{d_i\}
Busé, Laurent, d'Andrea, Carlos
core   +4 more sources

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