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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.

168,657 papers · 148 categories

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76152227303 · Jun 202019922001200920172026
48 results for smooth embedding

If the fundamental group of the complement of a smooth embedding f: S^2 \subset R^4 is a cyclic group, the map can be deformed to the standard embedding by a generic one-parameter family with at most cusp singularities. If two smooth embeddings are connected by such a deformation, they will be called cusp equivalent. W…

1999-11-20abs ↗pdf ↗

Smooth distributions on subcartesian spaces can be globally finitely generated.

problem Understanding smooth distributions on subcartesian spaces.
method Embedding in Euclidean space, Whitney Embedding Theorem, and distribution theory.
result Smooth generalized distributions and subbundles on connected subcartesian spaces are globally finitely generated.

Study on exotic smooth embeddings of surfaces in 4-manifolds, revealing different properties and complexities.

problem Understanding exotic smooth embeddings of surfaces in 4-manifolds.
method Analyzing smooth, proper embeddings of noncompact surfaces in 4-manifolds, focusing on exotic planes and annuli.
result Exotic planes and annuli exhibit radically different properties, with one class being simple enough to draw explicit level diagrams.

The paper explores conditions for homology spheres to bound acyclic smooth manifolds and symplectic fillings.

problem Conditions for integral homology 3-spheres to bound acyclic smooth 4-manifolds and their symplectic fillings.
method Structural results and analysis of smooth embeddings of lens spaces in C2\mathbb{C}^2.
result Smooth embeddings of connected sums of lens spaces in C2\mathbb{C}^2 cannot be upgraded to Stein embeddings.

We develop a new approach to the classical problem on isotopy classification of embeddings of manifolds into Euclidean spaces. This approach involves studying of a new embedding invariant, of almost-embeddings and of smoothing, as well as explicit constructions of embeddings. Using this approach we obtain complete conc…

2006-07-18abs ↗pdf ↗

The rational homology balls BnB_n appeared in Fintushel and Stern's rational blow-down construction [FS] and were subsequently used (e.g. Fintushel-Stern[FS4], Park[Pa2]) to construct exotic smooth manifolds with small Euler numbers. We show that a large class of smooth 4-manifolds have all of the BnB_n's for odd $n \g…

2012-12-18abs ↗pdf ↗

This paper solves PDEs for embedding discrete lattices into smooth manifolds.

problem Embedding discrete lattices into smooth manifolds while preserving geometric and topological properties.
method Rigorous mathematical framework and analysis of partial differential equations (PDEs).
result Existence and regularity of solutions to PDEs under initial boundary conditions.

In this work we prove the fact that, for a short time, it is possible to construct a smooth parametrized family of isometric embeddings of an arbitrary smooth parametrized family of Riemannian metrics on a smooth closed manifold into an Euclidean space. In order to prove this statement we work out stability estimates w…

2017-12-07abs ↗pdf ↗

We prove that an m-dimensional unit ball D^m in the Euclidean space {\mathbb R}^m cannot be isometrically embedded into a higher-dimensional Euclidean ball B_r^d \subset {\mathbb R}^d of radius r < 1/2 unless one of two conditions is met -- (1)The embedding manifold has dimension d >= 2m. (2) The embedding is not smoot…

2000-07-03abs ↗pdf ↗

The paper shows conditions under which certain 4-manifolds have no smooth spines.

problem Conditions for 4-manifolds to have no smooth spines.
method Using Heegaard Floer homology and high-dimensional surgery theory, the paper identifies obstructions for 4-manifolds to have smooth spines.
result The paper proves that certain knots and 4-manifolds do not have smooth spines.

Using the Cartan-Kahler theory, and results on real algebraic structures, we prove two embedding theorems. First, the interior of a smooth, compact 3-manifold may be isometrically embedded into a G_2-manifold as an associative submanifold. Second, the interior of a smooth, compact 4-manifold K, whose double has a trivi…

2007-08-09abs ↗pdf ↗

The purpose of this article is to investigate the relationship between suborbifolds and orbifold embeddings. In particular, we give natural definitions of the notion of suborbifold and orbifold embedding and provide many examples. Surprisingly, we show that there are (topologically embedded) smooth suborbifolds which d…

2014-06-12abs ↗pdf ↗

Study of pseudoconvex 3-manifolds in complex surfaces.

problem Understanding pseudoconvex 3-manifolds in complex surfaces.
method Develop tools for constructing topologically pseudoconvex embeddings and classify almost-complex structures.
result Every closed, oriented 3-manifold can be embedded in a compact complex surface realizing any homotopy class of almost-complex structures.

In this paper we introduce a technique, called rim surgery, which can change a smooth embedding of an orientable surface of positive genus and nonnegative self-intersection in a smooth 4-manifold while leaving the topological embedding unchanged.

1997-05-29abs ↗pdf ↗

Study shows no smooth embeddings of rational homology balls into complex projective plane.

problem Embedding rational homology balls into complex projective plane.
method Elementary arguments to prove non-existence of almost complex embeddings.
result No smooth embeddings of rational homology balls into complex projective plane.

This paper proves the existence of a smooth embedding for symmetrical manifolds.

problem Embedding symmetrical Riemannian manifolds isometrically in Euclidean spaces.
method Proves the existence of a CC^\infty equivariant isometric embedding.
result Existence of a CC^\infty equivariant isometric embedding of MM in $\RR^q$.

A stable smooth map f:NMf:N\to M is called "kk-realizable" if its composition with the inclusion MM×RkM\subset M\times\Bbb R^k is C0C^0-approximable by smooth embeddings; and a "kk-prem" if the same composition is CC^\infty-approximable by smooth embeddings, or equivalently if ff lifts vertically to a smooth embedding $…

2017-11-09abs ↗pdf ↗

In this note we prove certain necessary and sufficient conditions for the existence of an embedding of statistical manifolds. In particular, we prove that any compact smooth (C1C^1 resp.) statistical manifold can be embedded into the space of probability measures on a finite set. As a result, we get an answer to the La…

2005-06-09abs ↗pdf ↗

We obtain multirelative connectivity statements about spaces of Poincare embeddings, as precursors to analogous statements about spaces of smooth embeddings. The latter are the key to convergence results in the functor calculus approach to spaces of embeddings.

2008-01-25abs ↗pdf ↗

AGE improves graph embedding by smoothing features and iteratively enhancing node embeddings.

problem Challenges in attributed graph embedding, especially in preserving optimal low-pass characteristics and robustness.
method AGE, a novel framework combining Laplacian smoothing and adaptive encoding, addresses these issues.
result AGE consistently outperforms state-of-the-art methods on node clustering and link prediction tasks.

Spaces over BO are equivalent to thickened manifolds.

problem Understanding embeddings of manifolds in higher dimensions.
method Formal identification of manifolds with their thickened versions, using geometric constructions.
result The infinity-category of thickened smooth manifolds is equivalent to the infinity-category of finite spaces over BO.

For smooth embeddings of an integral homology 3-sphere in the 6-sphere, we define an integer invariant in terms of their Seifert surfaces. Our invariant gives a bijection between the set of smooth isotopy classes of such embeddings and the integers. It also gives rise to a complete invariant for homology bordism classe…

2005-06-22abs ↗pdf ↗

The smoothing theory is revised to generalize to different disc embedding spaces.

problem Generalizing the smoothing theory to various disc embedding spaces.
method Revising the Morlet-Burghelea-Lashof-Kirby-Siebenmann theorem to apply to different versions of disc smooth embedding spaces.
result The delooping of disc embedding spaces is shown to be compatible with the Hatcher and Budney actions.