Results 41 to 50 of about 228,669 (269)

Studies on the Stability and Microbial Biotransformation of Five Deschloroketamine Derivatives as Prerequisite for Wastewater‐Based Epidemiology Screening

open access: yesDrug Testing and Analysis, EarlyView.
Microbial biotransformation and stability of deschloroketamine derivatives and their metabolites in WW by incubating parent compounds, rat urine, or rat feces showed that deschloroketamine parents and Phase I metabolite were still detectable and that Phase II metabolites decreased in peak areas.
Fabian Frankenfeld   +2 more
wiley   +1 more source

On the Terwilliger Algebra of the Group Association Scheme of the Symmetric Group Sym(7) $\text{Sym}(7)$

open access: yesJournal of Combinatorial Designs, EarlyView.
ABSTRACT Terwilliger algebras are finite‐dimensional semisimple algebras that were first introduced by Paul Terwilliger in 1992 in studies of association schemes and distance‐regular graphs. The Terwilliger algebras of the conjugacy class association schemes of the symmetric groups Sym(n) $\text{Sym}(n)$, for 3≤n≤6 $3\le n\le 6$, have been studied and ...
Allen Herman   +2 more
wiley   +1 more source

A Characterization of Abelian Groups [PDF]

open access: yesProceedings of the American Mathematical Society, 1993
Let G G be a group and let k > 2 k > 2 be an integer such that ( k 3 − k ) > | G | / 2 ({k^3} - k) > |G|
openaire   +2 more sources

Combinable Extensions of Abelian Groups [PDF]

open access: yes, 2009
The design of decision procedures for combinations of theories sharing some arithmetic fragment is a challenging problem in verification. One possible solution is to apply a combination method à la Nelson-Oppen, like the one developed by Ghilardi for unions of nondisjoint theories.
Nicolini, Enrica   +2 more
openaire   +7 more sources

Harmonic Synthesis on Group Extensions

open access: yesMathematics
Harmonic synthesis describes translation invariant linear spaces of continuous complex valued functions on locally compact abelian groups. The basic result due to L.
László Székelyhidi
doaj   +1 more source

A note on abelian groups [PDF]

open access: yesProceedings of the American Mathematical Society, 1953
Vijayaraghavan and Chowla [2] have proved the following result. If n=2 or has no primitive root, then there exist suitable reduced residue systems rl, r2, , * * , rh and sl, S2 , . * Sh, where h= 4(n), such that risi, r2s2, * , rhsh is also a complete residue system (mod n).
openaire   +2 more sources

Note on the space group selection rule for closed strings on orbifolds

open access: yesJournal of High Energy Physics, 2019
It is well-known that the space group selection rule constrains the interactions of closed strings on orbifolds. For some examples, this rule has been described by an effective Abelian symmetry that combines with a permutation symmetry to a non-Abelian ...
Saúl Ramos-Sánchez   +1 more
doaj   +1 more source

Abelian Galois groups [PDF]

open access: yesProceedings of the American Mathematical Society, 1959
The question of the existence of noninner, nonouter Abelian Galois groups of noncommutative rings seems not to have been considered previously. Amitsur [1 ] may have come closest when he constructed noninner, nonouter cyclic division ring extensions.
openaire   +2 more sources

On the number of diamonds in the subgroup lattice of a finite abelian group

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
The main goal of the current paper is to determine the total number of diamonds in the subgroup lattice of a finite abelian group. This counting problem is reduced to finite p-groups. Explicit formulas are obtained in some particular cases.
Fodor Dan Gregorian   +1 more
doaj   +1 more source

Generalised fluxes, Yang-Baxter deformations and the O(d,d) structure of non-abelian T -duality

open access: yesJournal of High Energy Physics, 2018
Based on the construction of Poisson-Lie T -dual σ-models from a common parent action we study a candidate for the non-abelian respectively Poisson-Lie T -duality group.
Dieter Lüst, David Osten
doaj   +1 more source

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