Results 21 to 30 of about 19,142 (268)

Graded-irreducible modules are irreducible [PDF]

open access: yesCommunications in Algebra, 2016
Comments are welcome, to appear in Communications in ...
Chen, Justin, Kim, Youngsu
openaire   +2 more sources

Atlantoaxial Dislocation with Bony Fusion of C1/2 Facet Joints Treated with Posterior Joint Release, Distraction and Reduction

open access: yesSpine Surgery and Related Research, 2022
Introduction: Atlantoaxial dislocation (AAD) is a complicated and challenging deformity with severe morbidities. Irreducible AAD with C1/2 bony fusion requires anterior (transoral or transnasal) odontoidectomy to decompress spinal cord or medulla, which ...
Zhenlei Liu   +7 more
doaj   +1 more source

The Ideal Over Semiring of the Non-Negative Integer

open access: yesJTAM (Jurnal Teori dan Aplikasi Matematika), 2023
Assumed that (S,+,.) is a semiring. Semiring is a algebra structure as a generalization of a ring. A set I⊆S is called an ideal over semiring S if for any α,β∈I, we have α-β∈I and sα=αs∈I for every s in semiring S.
Aisyah Nur Adillah   +3 more
doaj   +1 more source

Irreducible Subcube Partitions

open access: yesThe Electronic Journal of Combinatorics, 2023
A subcube partition is a partition of the Boolean cube $\{0,1\}^n$ into subcubes. A subcube partition is irreducible if the only sub-partitions whose union is a subcube are singletons and the entire partition. A subcube partition is tight if it “mentions” all coordinates.
Yuval Filmus   +6 more
openaire   +2 more sources

Normalizers of irreducible subfactors [PDF]

open access: yesJournal of Mathematical Analysis and Applications, 2009
33 ...
Smith, R., White, S., Wiggins, A.
openaire   +3 more sources

On Irreducible Maps and Slices [PDF]

open access: yesCombinatorics, Probability and Computing, 2014
We consider the problem of enumeratingd-irreducible maps,i.e., planar maps all of whose cycles have length at leastd, and such that any cycle of lengthdis the boundary of a face of degreed. We develop two approaches in parallel: the natural approach via substitution, where these maps are obtained from general maps by a replacement of alld-cycles by ...
Bouttier, Jérémie, Guitter, Emmanuel
openaire   +4 more sources

Irreducible triangulations are small [PDF]

open access: yesJournal of Combinatorial Theory, Series B, 2010
A triangulation of a surface is \emph{irreducible} if there is no edge whose contraction produces another triangulation of the surface. We prove that every irreducible triangulation of a surface with Euler genus $g\geq1$ has at most $13g-4$ vertices. The best previous bound was $171g-72$.
Gwenaël Joret, David R. Wood
openaire   +3 more sources

Irreducibility of configurations

open access: yesArs Mathematica Contemporanea, 2015
In a paper from 1886, Martinetti enumerated small $v_3$-configurations. One of his tools was a construction that permits to produce a $(v+1)_3$-configuration from a $v_3$-configuration. He called configurations that were not constructible in this way irreducible configurations.
openaire   +4 more sources

Enumeration of irreducible and extended irreducible Goppa codes

open access: yesCoRR, 2019
We obtain upper bounds on the number of irreducible and extended irreducible Goppa codes over $GF(p)$ of length $q$ and $q+1$, respectively defined by polynomials of degree $r$, where $q=p^t$ and $r\geq 3$ is a positive integer.
Kondwani Magamba, John A. Ryan
openaire   +2 more sources

Irreducible Traumatic Posterior Shoulder Dislocation

open access: yesJournal of Education and Teaching in Emergency Medicine, 2017
History of present illness: A 22-year-old male presented to the Emergency Department complaining of right shoulder pain after a motocross accident.
Blake Collier, Christopher Trigger
doaj   +1 more source

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