Results 11 to 20 of about 4,749 (195)

Projective well-orderings and extensions of Lebesgue measure [PDF]

Colloquium Mathematicum, 1982
openaire   +4 more sources

Cardinal characteristics and projective wellorders

Annals of Pure and Applied Logic, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fischer, Vera, Friedman, Sy-David
openaire   +2 more sources

An effective Hamiltonian for an extended Kondo lattice model and a possible origin of charge ordering in half-doped manganites [PDF]

, 1999
An effective Hamiltonian is derived in the case of the strong Hund coupling and on-site Coulomb interaction by means of a projective perturbation approach.
Shen, Shun-Qing, Wang, Z. D.
core   +2 more sources

Jensen ${\Delta }_n^1$ Reals by Means of ZFC and Second-Order Peano Arithmetic

Axioms
It was established by Jensen in 1970 that there is a generic extension L[a] of the constructible universe L by a non-constructible real a∉L, minimal over L, such that a is Δ31 in L[a].
Vladimir Kanovei, Vassily Lyubetsky
doaj   +1 more source

Anomalous Symmetry Fractionalization and Surface Topological Order [PDF]

, 2015
In addition to possessing fractional statistics, anyon excitations of a 2D topologically ordered state can realize symmetry in distinct ways , leading to a variety of symmetry enriched topological (SET) phases.
Burnell, Fiona J., Chen, Xie, Fidkowski, Lukasz, Vishwanath, Ashvin   +3 more
core   +4 more sources

Trivial Extensions of Gentle Algebras and Brauer Graph Algebras [PDF]

, 2014
We show that two well-studied classes of tame algebras coincide: namely, the class of symmetric special biserial algebras coincides with the class of Brauer graph algebras.
Schroll, Sibylle
core   +1 more source

Projectively well-ordered inner models

Annals of Pure and Applied Logic, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Projective well-orderings and bounded forcing axioms

Journal of Symbolic Logic, 2005
AbstractIn the absence of Woodin cardinals, fine structural inner models for mild large cardinal hypotheses admit forcing extensions where bounded forcing axioms hold and yet the reals are projectively well-ordered.
openaire   +3 more sources

Wada Dessins associated with Finite Projective Spaces and Frobenius Compatibility [PDF]

, 2010
\textit{Dessins d'enfants} (hypermaps) are useful to describe algebraic properties of the Riemann surfaces they are embedded in. In general, it is not easy to describe algebraic properties of the surface of the embedding starting from the combinatorial ...
Sarti, Cristina
core  

Optimizing the double description method for normal surface enumeration

, 2009
Many key algorithms in 3-manifold topology involve the enumeration of normal surfaces, which is based upon the double description method for finding the vertices of a convex polytope.
Burton, Benjamin A.
core   +2 more sources