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A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

168,742 papers · 148 categories

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88177265353 · Jun 202019922001200920172026
48 results for definable maps

We present a definable smooth version of the Thom transversality theorem. We show further that the set of non-transverse definable smooth maps is nowhere dense in the definable smooth topology. Finally, we prove a definable version of a theorem of Trotman which says that the Whitney (a)(a)-regularity of a stratification…

2017-11-29abs ↗pdf ↗

In [S. Basu, A. Gabrielov, N. Vorobjov, Semi-monotone sets. arXiv:1004.5047v2 (2011)] we defined semi-monotone sets, as open bounded sets, definable in an o-minimal structure over the reals, and having connected intersections with all translated coordinate cones in R^n. In this paper we develop this theory further by d…

2012-01-02abs ↗pdf ↗

Maps and measures on surfaces link best Lipschitz and least gradient functions.

problem Analyzing maps between surfaces and their geometric properties.
method Duality between best Lipschitz and least gradient maps, geodesic laminations, and transverse measures.
result The infinity harmonic map defines a geodesic lamination and the least gradient map defines a transverse measure.

For an (m+1)(m+1)-dimensional space-time (Xm+1,g),(X^{m+1}, g), define a mapped null hypersurface to be a smooth map ν:NmXm+1ν:N^{m}\to X^{m+1} (that is not necessarily an immersion) such that there exists a smooth field of null lines along νν that are both tangent and gg-orthogonal to ν.ν. We study relations between mapped null hyp…

2007-02-11abs ↗pdf ↗

We prove that Manolescu and Woodward's Symplectic Instanton homology, and its twisted versions are natural, and define maps associated to four dimensional cobordisms within this theory. This allows one to define representations of the mapping class group and the fundamental group of a 3-manifold, and to have a geometri…

2017-10-11abs ↗pdf ↗

We give a partial characterization of bordered Floer homology in terms of sutured Floer homology. The bordered algebra and modules are direct sums of certain sutured Floer complexes. The algebra multiplication and algebra action correspond to a new gluing map on SFH. It is defined algebraically, and is a special case o…

2010-10-18abs ↗pdf ↗

In this article, we reformulate the cobordism map of embedded contact homology, which is induced by exact symplectic cobordism and defined as direct limit of homomorphisms called filtered ECH cobordism map. The filtered ECH cobordism map is defined by counting embedded holomorphic curves with zero ECH index and we prov…

2017-03-27abs ↗pdf ↗

We give necessary and sufficient conditions for Riemannian maps to be biharmonic. We also define pseudo umbilical Riemannian maps as a generalization of pseudo-umbilical submanifolds and show that such Riemannian maps put some restrictions on the base manifolds.

2010-12-09abs ↗pdf ↗

The paper defines and proves the existence of train track maps on graphs of groups.

problem Understanding homotopy equivalences in graphs of groups.
method Developed the theory of train track maps on graphs of groups, defining maps and homotopy equivalences.
result Any homotopy equivalence of a graph of groups may be represented by a relative train track map under certain conditions.

Study on infinite-type surfaces shows stable commutator length is continuous and defines open subgroups.

problem Understanding stable commutator length on infinite-type surfaces.
method Analyzing mapping class groups of infinite-type surfaces, showing continuity and openness of commutator subgroups.
result Stable commutator length defines a continuous function on commutator subgroups of infinite-type mapping class groups.

Marginal MAP inference involves making MAP predictions in systems defined with latent variables or missing information. It is significantly more difficult than pure marginalization and MAP tasks, for which a large class of efficient and convergent variational algorithms, such as dual decomposition, exist. In this work,…

2015-11-09abs ↗pdf ↗

We define a concept which we call multiplicity. First, multiplicity of a morphism is defined. Then the multiplicity of an object over another object is defined to be the minimum of the multiplicities of all morphisms from one to another. Based on this multiplicity, we define a pseudo distance on the class of objects. W…

2011-01-10abs ↗pdf ↗

The study examines when mapping class groups are quasi-isometric to graphs of curves.

problem When is the mapping class group of an infinite-type surface quasi-isometric to a graph of curves?
method Using the work of Rosendal, Mann, and Rafi, the study defines a necessary and sufficient condition called translatability for a mapping class group to be quasi-isometric to a graph of curves.
result The mapping class group of the plane minus a Cantor set is quasi-isometric to the loop graph defined by Bavard.

Study of endperiodic maps on infinite graphs, proving homotopy and eigenvalue properties.

problem Understanding endperiodic maps on infinite graphs with finitely many ends.
method Adapting relative train track maps and combinatorial techniques to infinite type setting.
result Any generalized endperiodic map is homotopic to a relative train track map.

Defines manifolds of mappings between function spaces and discusses their properties.

problem Defining smooth manifolds of mappings between function spaces.
method Defines a smooth manifold structure on sets of continuous mappings and discusses properties of natural mappings.
result Properties of spaces of sections and smoothness of natural mappings between spaces of mappings.

We define a moment map associated to a smooth torus action on a smooth manifold, without a two-form. We define cobordisms of such structures, allowing non compact manifolds as long as the moment maps are proper. We prove that a compact manifold with a torus action and a moment map is cobordant to the disjoint union of …

1997-01-19abs ↗pdf ↗

Defines formal exponentials for graded manifolds and linearizes QP-manifolds.

problem Formal exponentials and linearizations of QP-manifolds.
method Definition of formal exponential maps, Grothendieck connections, and connections on tangent bundles.
result Linearizes QP-manifolds at points, giving formal tangent spaces LL_\infty-algebra structures.

Geometric cohomology model uses co-oriented maps to define a product structure.

problem Constructing a geometric model for cohomology of smooth manifolds.
method Develops a cochain complex model based on co-oriented smooth maps, focusing on their pull-back product structure.
result Geometric cochains with a partially defined product structure induce the cup product in cohomology.

Study of wild mapping class groups and their cabled braids.

problem Understanding the structure of wild mapping class groups and their cabled versions.
method Define and study generalizations of pure g\mathfrak{g}-braid groups, establish product decompositions, and introduce fission trees.
result Obtain cabled versions of braid groups, related to braid operads.

Bökstedt and Madsen defined an infinite loop map from the embedded dd-dimensional cobordism category of Galatius, Madsen, Tillmann and Weiss to the algebraic KK-theory of BO(d)BO(d) in the sense of Waldhausen. The purpose of this paper is to establish two results in relation to this map. The first result is that it exte…

2011-10-14abs ↗pdf ↗

We define an invariant of contact 3-manifolds with convex boundary using Kronheimer and Mrowka's sutured monopole Floer homology theory (SHM). Our invariant can be viewed as a generalization of Kronheimer and Mrowka's contact invariant for closed contact 3-manifolds and as the monopole Floer analogue of Honda, Kazez, a…

2014-03-08abs ↗pdf ↗

New findings show the Gilmer-Masbaum map isn't always one-to-one.

problem Determining the injectivity of the Gilmer-Masbaum map on Kauffman bracket skein modules.
method Computed the image of the evaluation map for specific cases of mapping tori and analyzed homology classes.
result The restriction of the Gilmer-Masbaum map to certain homology classes is not injective.

sFML learns stochastic dynamical systems from data.

problem Learning unknown stochastic dynamical systems from measurement data.
method sFML extends FML for deterministic systems, using a stochastic flow map composed of deterministic and stochastic sub-maps.
result sFML constructs a stochastic evolution model approximating unknown stochastic systems.