Results 31 to 40 of about 409,094 (131)
A large variety of cohomology theories is derived from complex cobordism MU^*(-) by localizing with respect to certain elements or by killing regular sequences in MU_*.
Baker+21 more
core +4 more sources
Dyer-Lashof-Cohen operations in Hochschild cohomology
We give explicit formulae for operations in Hochschild cohomology which are analogous to the operations in the homology of double loop spaces. As a corollary we obtain that any brace algebra in finite characteristic is always a restricted Lie algebra ...
Tourtchine, Victor
core +4 more sources
Topological Aspects of Gauge Theories [PDF]
To appear in Encyclopedia of Mathematical Physics, published by Elsevier in early 2006. Comments/corrections welcome. The article surveys topological aspects in gauge theories.
arxiv
Instantons: topological aspects [PDF]
Short survey to be published at the Encyclopedia of Mathematical Physics.
arxiv
Implications of the Ganea Condition
Suppose the spaces X and X cross A have the same Lusternik-Schnirelmann category: cat(X cross A)= cat(X). Then there is a strict inequality cat(X cross (A halfsmash B)) < cat (X) + cat(A halfsmash B) for every space B, provided the connectivity of A is ...
Berstein+10 more
core +3 more sources
The Stiefel--Whitney theory of topological insulators [PDF]
We study the topological band theory of time reversal invariant topological insulators and interpret the topological $\mathbb{Z}_2$ invariant as an obstruction in terms of Stiefel--Whitney classes. The band structure of a topological insulator defines a Pfaffian line bundle over the momentum space, whose structure group can be reduced to $\mathbb{Z}_2$.
arxiv
Geometric Knot Spaces and Polygonal Isotopy
The space of n-sided polygons embedded in three-space consists of a smooth manifold in which points correspond to piecewise linear or ``geometric'' knots, while paths correspond to isotopies which preserve the geometric structure of these knots.
Calvo, Jorge Alberto
core +1 more source
Topologization of electron liquids with Chern-Simons theory and quantum computation [PDF]
We discuss a nexus among quantum topology, quantum physics and quantum computing.
arxiv
3-manifold invariants and periodicity of homology spheres
We show how the periodicity of a homology sphere is reflected in the Reshetikhin-Turaev-Witten invariants of the manifold. These yield a criterion for the periodicity of a homology sphere.Comment: Published by Algebraic and Geometric Topology at http://
Boileau+21 more
core +2 more sources
New Techniques for Computing Geometric Index
We introduce \textcolor{red}{general} new techniques for computing the geometric index of a link $L$ in the interior of a solid torus $T$. These techniques simplify and unify previous ad hoc methods used to compute the geometric index in specific ...
Andrist, Kathryn B.+3 more
core +1 more source