Results 31 to 40 of about 252,651 (269)

Noncomplete affine structures on Lie algebras of maximal class

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
Every affine structure on Lie algebra 𝔤 defines a representation of 𝔤 in aff(ℝn). If 𝔤 is a nilpotent Lie algebra provided with a complete affine structure then the corresponding representation is nilpotent.
E. Remm, Michel Goze
doaj   +1 more source

The many faces of earnings before interest, tax, depreciation and amortisation (EBITDA): Assessing the decision usefulness of EBITDA disclosure by Johannesburg Stock Exchange-listed companies

open access: yesJournal of Economic and Financial Sciences, 2020
Orientation: The voluntary disclosure of non-Generally Accepted Accounting Principles (non-GAAP) earnings may lack decision-usefulness if not faithfully represented or comparable.
Mattheus T. Mey, Christiaan Lamprecht
doaj   +1 more source

Forks, Noodles and the Burau representation for $n=4$

open access: yes, 2018
\begin{abstract} The reduced Burau representation is a natural action of the braid group $B_n$ on the first homology group $H_1({\tilde{D}}_n;\mathbb{Z})$ of a suitable infinite cyclic covering space ${\tilde{D}}_n$ of the $n$--punctured disc $D_n$.
Beridze, A., Traczyk, P.
core   +1 more source

A note on the Lawrence-Krammer-Bigelow representation

open access: yes, 2002
A very popular problem on braid groups has recently been solved by Bigelow and Krammer, namely, they have found a faithful linear representation for the braid group B_n.
Fadell   +5 more
core   +4 more sources

Survival Outcomes and Complications Among Canadian Children With Retinoblastoma: A Population‐Based Report From CYP‐C

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Retinoblastoma (RB) is the most common pediatric ocular cancer, yet population‐based data on survival and risk factors remain limited. This study aimed to describe survival in a large national RB cohort and identify predictors of death and complications.
Samuel Sassine   +14 more
wiley   +1 more source

The faithful triangular representations of Kaloujnine$p$-groups over a $p$-element field

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
The faithful triangular representations of finite Kaloujnine $p$-groups is studied. Images of generators of those groups are described. Infinite-dimensional representation of the direct limit of Kaloujnine $p$-groups is regarded.
Y. G. Leonov
doaj   +1 more source

Faithful linear representations of bands [PDF]

open access: yesPublicacions Matemàtiques, 2009
A band is a semigroup consisting of idempotents. It is proved that for any field K and any band S with finitely many components, the semigroup algebra K [S] can be embedded in upper triangular matrices over a commutative K-algebra. The proof of a theorem of Malcev [4, Theorem 10] on embeddability of algebras into matrix algebras over a field is ...
Cedó, F., Okniński, J.
openaire   +6 more sources

Outcomes of Live Virus Vaccination in Patients With Vascular Anomalies Being Treated With Sirolimus

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Live vaccination in patients with vascular anomalies (VA) receiving sirolimus remains controversial due to immunosuppressive effects and theoretical risks. Procedure This single‐center retrospective study included patients with VA less than 4 years old at the start of sirolimus therapy who were incompletely vaccinated.
Svatava Merkle   +5 more
wiley   +1 more source

On irreducible projective representations of finite groups [PDF]

open access: yesSurveys in Mathematics and its Applications, 2009
The paper is a survey type article inwhich we present some results on irreducible projective representations offinite groups. Section 2 includes Curtis and Reiner's theorem inwhich is proved that a finite group has at most a finite number ofinequivalent ...
Tania-Luminiţa Costache
doaj  

Linear representations of random groups [PDF]

open access: yesBulletin of Mathematical Sciences, 2019
We show that for a fixed k ∈ ℕ, Gromov random groups with any density d > 0 have no nontrivial degree k representations over any field, a.a.s. This is especially interesting in light of the results of Agol, Ollivier and Wise that when d < 1 6 such groups
Gady Kozma, Alexander Lubotzky
doaj   +1 more source

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