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Related papers: Topological expansion and boundary conditions

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We present a method for computing the topological entropy of one-dimensional maps. As an approximation scheme, the algorithm converges rapidly and provides both upper and lower bounds.

chao-dyn · Physics 2009-10-22 N. J. Balmforth , E. A. Spiegel , C. Tresser

Begin with a set of four points in the real plane in general position. Add to this collection the intersection of all lines through pairs of these points. Iterate. Ismailescu and Radoi\v{c}i\'{c} (2003) showed that the limiting set is dense…

Combinatorics · Mathematics 2008-07-11 Joshua Cooper , Mark Walters

In this paper and its sequel, we construct topologically invariant defects in two-dimensional classical lattice models and quantum spin chains. We show how defect lines commute with the transfer matrix/Hamiltonian when they obey the defect…

Statistical Mechanics · Physics 2017-09-11 David Aasen , Roger S. K. Mong , Paul Fendley

We consider the three-dimensional Ising model in a half-space with a boundary field (no bulk field). We compute the low-temperature expansion of layering transition lines.

Statistical Mechanics · Physics 2015-05-14 K. S. Alexander , F. M. Dunlop , S. Miracle-Sole

We study the open refined topological string amplitudes using the refined topological vertex. We determine the refinement of holonomies necessary to describe the boundary conditions of open amplitudes (which in particular satisfy the…

High Energy Physics - Theory · Physics 2018-05-04 Can Kozçaz , Shamil Shakirov , Cumrun Vafa , Wenbin Yan

An adaptive isogeometric method based on $d$-variate hierarchical spline constructions can be derived by considering a refine module that preserves a certain class of admissibility between two consecutive steps of the adaptive loop [6]. In…

Numerical Analysis · Mathematics 2016-05-04 Annalisa Buffa , Carlotta Giannelli , Philipp Morgenstern , Daniel Peterseim

We obtain the asymptotic expansions of the traces of the thermoelastic operators with the Dirichlet and Neumann boundary conditions on a Riemannian manifold, and give an effective method to calculate all the coefficients of the asymptotic…

Spectral Theory · Mathematics 2022-05-27 Genqian Liu , Xiaoming Tan

An iterative algorithm for determining a class of solutions of the dispersionful 2-Toda hierarchy characterized by string equations is developed. This class includes the solution which underlies the large N-limit of the Hermitian matrix…

Exactly Solvable and Integrable Systems · Physics 2009-11-13 L. Martinez Alonso , E. Medina

Surface extraction from implicit neural representations modelling a single class surface is a well-known task. However, there exist no surface extraction methods from an implicit representation of multiple classes that guarantee topological…

Machine Learning · Computer Science 2026-02-19 Jash Vira , Andrew Myers , Simon Ratcliffe

This paper develops new tools for understanding surfaces with more than one end (and usually, of infinite topology) which properly minimally embed into Euclidean three-space. On such a surface, the set of ends forms a compact Hausdorff…

Differential Geometry · Mathematics 2019-08-19 Pascal Collin , Robert Kusner , William H. Meeks , III , Harold Rosenberg

We introduce an effective algorithmic method for the computation of a lower bound for uniform expansion in one-dimensional dynamics. The approach employs interval arithmetic and thus provides a rigorous numerical result (computer-assisted…

Dynamical Systems · Mathematics 2026-01-28 Paweł Pilarczyk , Michał Palczewski , Stefano Luzzatto

In this work we propose the use of a hirarchical extension of the polygonality index as a means to characterize and model geographical networks: each node is associated with the spatial position of the nodes, while the edges of the network…

Physics and Society · Physics 2009-11-13 Bruno A. N. Travencolo , Luciano da F. Costa

In this article a new upper bounds for the multiple trigonometrical integrals are found. The method of the work based on a new method of estimation for the areas of algebraic surfaces.

Number Theory · Mathematics 2013-03-15 Ilgar Sh. Jabbarov

Marching surfaces is a method for isosurface extraction and approximation based on a $G^1$ multi-sided patch interpolation scheme. Given a 3D grid of scalar values, an underlying curve network is formed using second order information and…

Graphics · Computer Science 2015-02-10 Gustavo Chávez , Alyn Rockwood

In this paper, we first get a criterion formula for whether a differential form is holomorphic with respect to the generalized complex structure induced by $\epsilon$. Next, we get the local extensions of $\overline\partial$-closed forms on…

Differential Geometry · Mathematics 2018-03-13 Kang Wei

Iterative rounding and relaxation have arguably become the method of choice in dealing with unconstrained and constrained network design problems. In this paper we extend the scope of the iterative relaxation method in two directions: (1)…

Data Structures and Algorithms · Computer Science 2015-05-18 Nikhil Bansal , Rohit Khandekar , Jochen Konemann , Viswanath Nagarajan , Britta Peis

In this paper we outline an algorithmic approach to compute Puiseux series expansions for algebraic surfaces. The series expansions originate at the intersection of the surface with as many coordinate planes as the dimension of the surface.…

Symbolic Computation · Computer Science 2012-05-07 Danko Adrovic , Jan Verschelde

In this paper, we introduce the notion of expanding topological space. We define the topological expansion of a topological space via local multi-homeomorphism over coproduct topology, and we prove that the coproduct family associated to…

General Mathematics · Mathematics 2021-07-13 Helene Porchon

We solve the loop equations to all orders in $1/N^2$, for the Chain of Matrices matrix model (with possibly an external field coupled to the last matrix of the chain). We show that the topological expansion of the free energy, is, like for…

Mathematical Physics · Physics 2015-05-13 Bertrand Eynard , Aleix Prats Ferrer

In this paper, we further explore the local-to-global approach for expansion of simplicial complexes that we call local spectral expansion. Specifically, we prove that local expansion in the links imply the global expansion phenomena of…

Combinatorics · Mathematics 2018-03-06 Izhar Oppenheim