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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.

169,291 papers · 148 categories

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48 results for Triply periodic surfaces

The paper calculates Morse indices and nullities for triply periodic minimal surfaces.

problem Computing Morse indices and nullities for triply periodic minimal surfaces.
method Developed an algorithm to compute Morse index and nullity using matrix properties of abelian differentials.
result Explicitly determined key matrices for five families of triply periodic minimal surfaces.

The study constructs periodic surfaces using graph theory and applies cyclically branched coverings to identify their conformal type.

problem Constructing and identifying the conformal type of periodic surfaces with a given geometric structure.
method Graph theory and cyclically branched coverings.
result Explicit cone metrics on compact Riemann surfaces can be realized as the quotient of triply periodic polyhedral surfaces.

New method glues Scherk surfaces into minimal surfaces, limiting possible outcomes.

problem Limiting the outcomes of gluing Scherk surfaces into minimal surfaces.
method Constructing minimal surfaces by stacking and gluing doubly periodic Scherk surfaces.
result Except for special cases, gluing more Scherk surfaces results in known minimal surfaces.

New 2-parameter family of triply periodic minimal surfaces, sharing properties with Schwarz' D but distinct.

problem Proving the existence of a new family of triply periodic minimal surfaces.
method Proved existence through mathematical proof and analysis of properties.
result New family oΔΔ does not belong to Meeks' five-dimensional family but shares properties with Schwarz' D.

Given a tiling T\mathcal{T} of the plane by straight edge polygons, which is invariant by two independent translations, we construct a family of embedded triply periodic minimal surfaces which desingularizes T×R\mathcal{T}\times\mathbb{R}. For this purpose, inspired by the work of Martin Traizet, we open the nodes of s…

2010-02-25abs ↗pdf ↗

Researchers create new triply periodic minimal surfaces by gluing saddle towers.

problem Creating triply periodic minimal surfaces without symmetry constraints.
method Gluing Karcher-Scherk saddle towers with phase differences and balancing under vertical interaction.
result Expands known triply periodic minimal surfaces into new 5-parameter families.

The study finds area estimates for specific surface types in a flat 3-torus.

problem Finding surfaces with constant mean curvature in a flat 3-torus.
method Analyzes closed surfaces with specific genus and constant mean curvature in a closed flat 3-torus.
result Establishes area estimates for surfaces with constant mean curvature, contrasting with minimal surfaces.

New method for counting distinct tilings with symmetrical surfaces.

problem Counting distinct tilings with symmetrical surfaces.
method Deriving representations of mapping class groups and describing tilings as decorations on orbifolds.
result Explicit enumeration of isotopically distinct tilings.

Paper constructs and proves existence of chiral triply-periodic minimal surfaces.

problem Existence of chiral triply-periodic minimal surfaces of genus 4.
method Construction based on dual qtz--qzd nets, existence proof using Weierstrass method on branched torus.
result Family of chiral triply-periodic minimal surfaces of genus 4 constructed and proved to exist.

This study investigates porosity and topological properties of TPMS using machine learning.

problem Understanding the relationships between porosity and topological properties of TPMS.
method Application of machine learning techniques to analyze porosity and shape factor of TPMS.
result Conjectures suggesting polynomial relationships between porosity and shape factor of TPMS.

Schwarz H surfaces can be continuously deformed into Meeks surfaces.

problem Classifying and understanding the relationship between Schwarz H surfaces and Meeks surfaces.
method Constructing a 2-parameter family of TPMS of genus three that contains both H and Meeks surfaces.
result Schwarz H surfaces can be continuously deformed into Meeks surfaces.

Two surfaces minimize variance of Gaussian curvature.

problem Minimizing the variance of Gaussian curvature on triply periodic minimal surfaces.
method Interpreting branch values of Gauss map, expressing variance as integrals of exponentials of Green's functions, analyzing Hessian.
result The P and D surfaces are local minimizers of the variance of Gaussian curvature.

For each braid βBrnβ\in Br_n we construct a 22-periodic complex Sβ\mathbb{S}_β of quasi-coherent C×C\mathbb{C}^*\times \mathbb{C}^*-equivariant sheaves on the non-commutative nested Hilbert scheme Hilb1,nfreeHilb_{1,n}^{free}. We show that the triply graded vector space of the hypecohomology $ \mathbb{H}( \mathbb{S}_β\otimes \wed…

2016-08-10abs ↗pdf ↗

We modify the definition of the Khovanov complex for oriented links in a thickening of an oriented surface to obtain a triply graded homological link invariant with a new homotopical grading.

2015-01-20abs ↗pdf ↗

We use algebraic Backlund transformations (BTs) to construct explicit solutions of the modified 2+1 chiral model from T2×RT^2\times R to SU(n), where T2T^2 is a 2-torus. Algebraic BTs are parameterized by zCz\in C (poles) and holomorphic maps ππ from T2T^2 to Gr(k,Cn)(k,C^n). We apply Bäcklund transformations with carefully…

2004-05-19abs ↗pdf ↗

We propose a framework for unifying the sl(N) Khovanov-Rozansky homology (for all N) with the knot Floer homology. We argue that this unification should be accomplished by a triply graded homology theory which categorifies the HOMFLY polynomial. Moreover, this theory should have an additional formal structure of a fami…

2005-05-30abs ↗pdf ↗

Nonorientable spanning surfaces of periodic knots can have arbitrarily high first Betti number.

problem Periodic knots do not always have nonorientable spanning surfaces of high genus.
method Examples and calculations of nonorientable spanning surfaces of periodic knots.
result The first Betti number of nonorientable spanning surfaces can be arbitrarily large.

Constructs a family of genus three minimal surfaces with parallel ends.

problem Creating embedded doubly periodic minimal surfaces with specific topological properties.
method Constructs a one-parameter family of surfaces with given Weierstrass data and solves the period problem.
result Solves the two dimensional period problem for the constructed surfaces.