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Commutator automorphisms of formal power series rings [PDF]

open access: yesProceedings of the American Mathematical Society, 2005
For a big class of commutative rings R R , every continuous
Gubeladze, Joseph, Mushkudiani, Zaza
openaire   +3 more sources

On Magnus' Freiheitssatz and free polynomial algebras [PDF]

open access: yesInternational Journal of Group Theory, 2015
The Freiheitssatz of Magnus for one-relator groups is one of the cornerstones of combinatorial group theory. In this short note which is mostly expository we discuss the relationship between the Freiheitssatz and corre- sponding results in free power ...
Benjamin Fine   +2 more
doaj  

A Comparison of Deformations and Geometric Study of Varieties of Associative Algebras

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2007
The aim of this paper is to give an overview and to compare the different deformation theories of algebraic structures. In each case we describe the corresponding notions of degeneration and rigidity.
Abdenacer Makhlouf
doaj   +1 more source

FACTORING POLYNOMIALS IN THE RING OF FORMAL POWER SERIES OVER ℤ [PDF]

open access: yesInternational Journal of Number Theory, 2012
We consider polynomials with integer coefficients and discuss their factorization properties in ℤ[[x]], the ring of formal power series over ℤ. We treat polynomials of arbitrary degree and give sufficient conditions for their reducibility as power series.
Birmajer, Daniel   +2 more
openaire   +2 more sources

Nondegenerate Ideals in Formal Power Series Rings

open access: yesRocky Mountain Journal of Mathematics, 2004
Let \(A\) be the formal power series ring \(\mathbb{C}[[x_1,\dots, x_n]]\) over \(\mathbb{C}\). For \(k=(k_1,\dots, k_n)\in \mathbb{Z}^n_+\), put \(x^k= x^{k_1}_1\cdots x^{k_n}_n\) and an element \(g= \sum a_{k_1,\dots, k_n} x^{k_1}_1\cdots x^{k_n}_n\) of \(A\) is written as \(g=\sum a_k x^k\). For an element \(g= \sum a_k x^k\) and an ideal \(I\) of \(
openaire   +2 more sources

Formal power series rings over a $\pi$-domain

open access: yesJournal of the European Mathematical Society, 2009
Let R be an integral domain, Χ be a set of indeterminates over R , and
Kang, BG, Oh, DY
openaire   +2 more sources

The skills required for transition to university and study in biological sciences: A student perspective

open access: yesFEBS Open Bio, EarlyView.
Bioscience students were asked for their opinions on the value and teaching of skills. 204 responded that teamwork, time management and study skills are necessary to reach University, that scientific writing, research, laboratory and presentation skills are taught effectively during their studies, while other skills are gained inherently through study ...
Janella Borrell, Susan Crennell
wiley   +1 more source

Smooth locus of twisted affine Schubert varieties and twisted affine Demazure modules

open access: yesForum of Mathematics, Sigma
Let ${\mathscr {G}} $ be a special parahoric group scheme of twisted type over the ring of formal power series over $\mathbb {C}$ , excluding the absolutely special case of $A^{(2)}_{2\ell }$ .
Marc Besson, Jiuzu Hong
doaj   +1 more source

Catenarity of formal power series rings over a pullback

open access: yesJournal of Pure and Applied Algebra, 1992
Let \((T,M,K)\) be a quasi local domain with maximal ideal \(M\) and residue class field \(K\). If \(\varphi\) is the natural surjection of \(T\) on \(K\), for any subring \(D\) of \(K\), \(\varphi^{-1}(D)=R\) is called the pull back. The main interest of the authors is in finding conditions for \(R[[X_ 1,\dots,X_ n]]\) catenarian.
ANDERSON DF   +3 more
openaire   +1 more source

Relationship Between Neurologic Symptoms and Signs and FMR1 Genotype in Premutation Carriers

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Objectives Fragile X‐associated Tremor/Ataxia Syndrome (FXTAS) is the most severe late‐onset condition caused by a premutation in the FMR1 gene, characterized by expanded CGG triplet repeats of 55–200. Clinical presentations of FXTAS, including gait ataxia, kinetic tremor, cognitive decline, and rare Parkinsonism, are linked to ...
Flora Tassone   +8 more
wiley   +1 more source

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