Results 1 to 10 of about 6,061 (158)

The Brauer–Clifford group

open access: yesJournal of Algebra, 2009
Let \(G\) be a finite group, \(F\) a field, and \(Z\) a commutative central simple \(G\)-algebra. In this paper the author introduces the Brauer-Clifford group \(\text{BrCliff}(G,Z)\). This group consists of certain equivalence classes of central simple \(G\)-algebras, and the product is associated with the tensor product of algebras.
Alexandre Turull
exaly   +4 more sources

The conjectures of Artin-Tate and Birch-Swinnerton-Dyer [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2022
We provide two proofs that the conjecture of Artin-Tate for a fibered surface is equivalent to the conjecture of Birch-Swinnerton-Dyer for the Jacobian of the generic fibre.
S. Lichtenbaum   +2 more
doaj   +1 more source

Patient and Caregiver Perceptions of Animal Assisted Activity in Orthodontics

open access: yesAnimals, 2022
Dental anxiety affects up to 21% of children and 80% of adults and is associated with lifelong dental avoidance. Animal assisted activity (AAA) is widely used to reduce anxiety and pain in medical settings and has promise in dentistry.
Katelyn Cass   +10 more
doaj   +1 more source

Impacts of Development, Dentofacial Disharmony, and Its Surgical Correction on Speech: A Narrative Review for Dental Professionals

open access: yesApplied Sciences, 2023
Speech is a communication method found only in humans that relies on precisely articulated sounds to encode and express thoughts. Anatomical differences in the maxilla, mandible, tooth position, and vocal tract affect tongue placement and broadly ...
Christine Bode   +8 more
doaj   +1 more source

Brauer groups of moduli of hyperelliptic curves via cohomological invariants

open access: yesForum of Mathematics, Sigma, 2021
Using the theory of cohomological invariants for algebraic stacks, we compute the Brauer group of the moduli stack of hyperelliptic curves ${\mathcal {H}}_g$ over any field of characteristic $0$.
Andrea Di Lorenzo, Roberto Pirisi
doaj   +1 more source

THE BRAUER GROUP OF THE DIHEDRAL GROUP [PDF]

open access: yesGlasgow Mathematical Journal, 2004
Let $p^m$ be a power of a prime number $p$, $\mathbb{Dacute;_{p^m}$ be the dihedral group of order $2p^m$ and $k$ be a field where $p$ is invertible and containing a primitive $2p^m$-th root of unity. The aim of this paper is computing the Brauer group $BM(k,\mathbb{D}_{p^m},R_z)$ of the group Hopf algebra of $\mathbb{D}_{p^m}$ with respect to the ...
CARNOVALE, G., CUADRA, J.
openaire   +2 more sources

Annotated catalogue of the Tachinidae (Insecta, Diptera) of Chile [PDF]

open access: yesZooKeys, 2021
The Tachinidae (Diptera) of Chile are catalogued and information is given on distributions, name-bearing types, synonyms, nomenclatural issues, and pertinent literature.
James E. O'Hara   +2 more
doaj   +3 more sources

The equivariant Brauer group of a group [PDF]

open access: yesProceedings of the American Mathematical Society, 2005
We consider the Brauer group ${\rm BM}'(k,G)$ of a group $G$ (finite or infinite) over a commutative ring $k$ with identity. A split exact sequence $$1\longrightarrow {\rm Br}'(k)\longrightarrow {\rm BM}'(k,G)\longrightarrow {\rm Gal}(k,G) \longrightarrow 1$$ is obtained. This generalizes the Fröhlich-Wall exact sequence from the case of a field to the
Caenepeel, Stefaan   +2 more
openaire   +5 more sources

Phylogenetic relationships of the woodlouse flies (Diptera: Rhinophorinae) and the cluster flies (Diptera: Polleniidae).

open access: yesPLoS ONE, 2023
Phylogenetic relationships within the oestroid subclades Rhinophorinae (Calliphoridae) and Polleniidae were reconstructed for the first time, applying a Sanger sequencing approach using the two protein-coding nuclear markers CAD (carbamoyl-phosphate ...
Silvia Gisondi   +6 more
doaj   +1 more source

Cayley Hash Values of Brauer Messages and Some of Their Applications in the Solutions of Systems of Differential Equations

open access: yesComputation, 2022
Cayley hash values are defined by paths of some oriented graphs (quivers) called Cayley graphs, whose vertices and arrows are given by elements of a group H. On the other hand, Brauer messages are obtained by concatenating words associated with multisets
María Alejandra Osorio Angarita   +4 more
doaj   +1 more source

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