80 research outputs found
Simple algebras of Weyl type
Over a field of any characteristic, for a commutative associative algebra
with an identity element and for the polynomial algebra of a
commutative derivation subalgebra of , the associative and the Lie
algebras of Weyl type on the same vector space are
defined. It is proved that , as a Lie algebra (modular its center) or as
an associative algebra, is simple if and only if is -simple and
acts faithfully on . Thus a lot of simple algebras are obtained.Comment: 9 pages, Late
Dual Pairs of Type II String Compactification
Using a -duality symmetry of type II compactification on represented
by triality action on the -duality group, and applying the adiabatic
argument we construct dual pairs of type II compactifications in lower
dimensions. The simplicity of this construction makes it an ideal set up for
testing various conjectures about string dualities. In some of these models the
type II string has a perturbative non-abelian gauge symmetry. Examples include
models with supersymmetry in four dimensions. There are also
self-dual (in the sense of exchange symmetric) and examples.
A generalization of the adiabatic argument can be used to construct dual pairs
of models with supersymmetry.Comment: LaTeX file, 30 page
The interpretations and uses of fitness landscapes in the social sciences
__Abstract__
This working paper precedes our full article entitled “The evolution of Wright’s (1932) adaptive field to contemporary interpretations and uses of fitness landscapes in the social sciences” as published in the journal Biology & Philosophy (http://link.springer.com/article/10.1007/s10539-014-9450-2). The working paper features an extended literature overview of the ways in which fitness landscapes have been interpreted and used in the social sciences, for which there was not enough space in the full article. The article features an in-depth philosophical discussion about the added value of the various ways in which fitness landscapes are used in the social sciences. This discussion is absent in the current working paper. Th
Nifedipine enhances the vasodepressor and natriuretic effects of atrial natriuretic peptide.
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