Results 51 to 60 of about 9,057,349 (234)
Making palaeoclimatology research policy‐relevant: Insights and experience from the DECADAL Project
Journal of Quaternary Science, EarlyView.ABSTRACT Quaternary palaeoclimatology uniquely provides insights and new evidence about climate variability trends and extremes prior to the instrumental record; yet, its knowledge is rarely integrated into governmental decision‐making. This opinion piece shares lessons and experience from the UKRI‐funded DECADAL project, which bridges palaeoclimate ...
Celia Martin‐Puertas +18 more
wiley +1 more source
The Brauer-Manin Obstruction and Sha[2]. [PDF]
, 2007 We discuss the Brauer-Manin obstruction on del Pezzo surfaces of degree 4. We outline a detailed algorithm for computing the obstruction and provide associated programs in magma.
Flynn, E. V. +3 more
core
The strong Brauer group of a cocommutative coalgebra [PDF]
, 2002 Using strong equivalences for coalgebras we define the strong Brauer group of a cocommutative coalgebra C, which is a subgroup of the Brauer group of C. In general there is not a good relation between the Brauer group of a coalgebra and the Brauer group ...
Van Oystaeyen, Freddy +2 more
core +1 more source
Quadratic forms and Brauer groups
, 2020 The Clifford algebras provide a connection between the study of quadratic forms and the Brauer group. We explain how a bound for the u-invariant of a field can be given purely in terms of certain period-index bounds for the Brauer group. We survey some
Parimala, Raman
core +1 more source
Group actions and coverings of Brauer graph algebras
, 2013 We develop a theory of group actions and coverings on Brauer graphs that parallels the theory of group actions and coverings of algebras. In particular, we show that any Brauer graph can be covered by a tower of coverings of Brauer graphs such that the ...
Sibylle Schroll (7585418) +2 more
core +5 more sources
Characterization of Dental Composite Resin with Additional TiO2 Nanoparticle Filler
Macromolecular Symposia, EarlyView.Silanized SiO2‐based dental composite resins with and without TiO2 nanoparticle addition were fabricated using a Bis‐GMA/TEGDMA resin matrix and photopolymerized under 468‐470 nm UV light. The resulting composites, composite I (55% SiO2) and composite II (50% SiO2 + 5% TiO2), were characterized via scanning electron microscopy (SEM), Fourier transform ...
Siti Fauziyah Rahman +4 more
wiley +1 more source
n-Torsion of Brauer groups as relative Brauer groups of abelian extensions
Journal of Number Theory, 2007 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Popescu, Cristian D. +2 more
openaire +1 more source
And then there was us Et puis nous sommes apparus
Journal of the Royal Anthropological Institute, EarlyView.In 1987, the academic conference ‘Origins and Dispersals of Modern Humans: Behavioural and Biological Perspectives’ was held in Cambridge, UK. Subsequently referred to as the ‘Human Revolution’ conference, this meeting brought together the most prominent academics working in the field of human origins, including archaeologists and palaeoanthropologists,
Emma E. Bird +2 more
wiley +1 more source
The Brauer Group of a Field [PDF]
, 2018 In this paper we discuss the Brauer group of a field and its connections with cohomology groups. Definitions involving central simple algebras lead to a discussion of splitting fields, which are the important step in the connection of the Brauer group ...
Aycock, Jonathan
core +1 more source
On the Brauer Group of Toric Varieties [PDF]
Transactions of the American Mathematical Society, 1993 Let \(X\) be an algebraic variety over an algebraically closed field of characteristic zero, let \(B(X)\) be the Brauer group of Azumaya algebras on \(X\), and let \(B'(X)\) be the cohomological Brauer group of \(X\), i.e., the torsion subgroup of the second étale cohomology group \(H^ 2(X,G_ m)\) with coefficients in the sheaf of units.
Demeyer, Frank R., Ford, Timothy J.
openaire +1 more source