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arXiv research

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.

169,042 papers · 148 categories

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4999148197 · Jun 202019922001200920172026
48 results for dimensions 3-6

We present enumerations of a class of toroidal graphs which give rise to semi-equivelar maps. There are eleven different types of semi-equivelar maps on the torus. These are of the types {36}\{3^{6}\}, {44}\{4^{4}\}, {63}\{6^{3}\}, {33,42}\{3^{3}, 4^{2}\}, {32,4,3,4}\{3^{2}, 4, 3, 4\}, {3,6,3,6}\{3, 6, 3, 6\}, {34,6}\{3^{4}, 6\}, {4,82}\{4, 8^{2}\}, $\…

2013-11-01abs ↗pdf ↗

We present enumerations of a class of maps on Klein bottle which give rise to semi-equivelar maps. Semi-equivelar maps are generalizations of equivelar maps. There are eleven types of semi-equivelar maps on the Klein bottle. These are of the types {36}\{3^{6}\}, {44}\{4^{4}\}, {63}\{6^{3}\}, {33,\{3^{3}, 42}4^{2}\}, {32,\{3^{2},

2015-09-15abs ↗pdf ↗

The paper extends distributions by singular curves, revealing structural equivalences.

problem Extending (3,6)(3, 6)-distributions using singular curves.
method Using data from singular curves, the paper extends (3,6)(3, 6)-distributions to higher rank distributions.
result The equivalence of classification problems for four extended distribution classes.

The study of holonomy groups in flat solvmanifolds, proving finite abelian groups can be holonomy groups and describing dimensions.

problem Understanding the holonomy groups of flat solvmanifolds.
method Elementary proof and construction of examples for various dimensions.
result Finite abelian groups can be holonomy groups of flat solvmanifolds, and specific dimensions and holonomy groups are described.

We solve a strong version of Problem 3.6 (D) in Kirby's list, that is, we show that for any integer nn, there exist infinitely many mutually distinct knots such that 22-handle additions along them with framing nn yield the same 44-manifold.

2014-08-01abs ↗pdf ↗

A zigzag in a plane graph is a circuit of edges, such that any two, but no three, consecutive edges belong to the same face. A railroad in a plane graph is a circuit of hexagonal faces, such that any hexagon is adjacent to its neighbors on opposite edges. A graph without a railroad is called tight. We consider the zigz…

2002-12-27abs ↗pdf ↗

We introduce and investigate the notion of (strong) KGnK^n_G-manifolds, where GG is an abelian group. One of the result related to that notion (Theorem 3.4) implies the following partial answer to the Bing-Borsuk problem \cite{bb}, whether any partition of a homogeneous metric ANRANR-space XX of dimension nn is cyclic…

2013-01-13abs ↗pdf ↗

The normalized Yamada polynomial is a polynomial invariant in variable A for theta-curves. In this work, we show that the coefficients of the power series obtained from this polynomial by the substitution A=e^x=1+x+x^2/2+x^3/6+... are finite-type invariants for theta-curves although the coefficients of original polynom…

2001-04-18abs ↗pdf ↗

Study of ants' movement rules on a 6D space, revealing distribution structures and singular trajectories.

problem Understanding the movement patterns of ants in a 6D space.
method Analyzing mechanical system rules to derive distribution structures and singular trajectories.
result Distributions and singular trajectories of ants' movement rules in a 6D space.

This paper classifies semi-equivelar gems on a double torus.

problem Classifying semi-equivelar gems on surfaces with negative Euler characteristic.
method Regular colored graphs representing the double torus, with identical cyclic face degree sequences around each vertex.
result 31 types of semi-equivelar gems on the double torus.

In this note we announce some results, due to appear in [2], [3], on the structure of integral and normal currents, and their relation to Frobenius theorem. In particular we show that an integral current cannot be tangent to a distribution of planes which is nowhere involutive (Theorem 3.6), and that a normal current w…

2017-05-28abs ↗pdf ↗

Minimal non-arithmetic hyperbolic 3-orbifold found with least volume.

problem Finding the hyperbolic 3-orbifold with minimal volume among non-arithmetic ones.
method Utilized the tetrahedral Coxeter group and horoball configuration to prove minimal volume.
result The 1-cusped quotient of hyperbolic space by the tetrahedral Coxeter group has minimal volume.

Semi-Equivelar maps are generalizations of Archimedean solids to the surfaces other than 2-sphere. There are eight semi-equivelar maps of types {33,42}\{3^{3},4^{2}\}, {32,4,3,4}\{3^{2},4,3,4\}, {6,3,6,3}\{6,3,6,3\}, {34,6}\{3^{4},6\}, {4,82}\{4,8^{2}\}, {3,122}\{3,12^{2}\}, {4,6,12}\{4,6,12\}, {6,4,3,4}\{6,4,3,4\} exist on the torus. In this article we show the e…

2013-08-30abs ↗pdf ↗

We give an algebraic way of distinguishing the components of the exceptional strata of quadratic differentials in genus three and four. The complete list of these strata is (9, -1), (6,3,-1), (3,3,3, -1) in genus three and (12), (9,3), (6,6), (6,3,3) and (3,3,3,3) in genus four. This result is part of a more general in…

2012-04-08abs ↗pdf ↗

The herd behavior of returns is investigated in Korean futures exchange market. It is obtained that the probability distribution of returns for three types of herding parameter scales as a power law RβR^{-β} with the exponents β=3.6 β=3.6(KTB203) and 2.9(KTB209) in two kinds of Korean treasury bond. For our case since the…

2003-04-07abs ↗pdf ↗

We present an objective function for learning with unlabeled data that utilizes auxiliary expectation constraints. We optimize this objective function using a procedure that alternates between information and moment projections. Our method provides an alternate interpretation of the posterior regularization framework (…

2012-05-09abs ↗pdf ↗

A polyhedral map is called {p,q}\{p, q\}-equivelar if each face has pp edges and each vertex belongs to qq faces. In 1983, it was shown that there exist infinitely many geometrically realizable {p,q}\{p, q\}-equivelar polyhedral maps if q>p=4q > p = 4, p>q=4p > q = 4 or q3>p=3q - 3 > p = 3. It was shown in 2001 that there exist infi…

2005-06-30abs ↗pdf ↗

Formula found for maximal systole of hyperbolic surfaces with largest S3S^3 symmetry.

problem Finding the maximal systole of hyperbolic surfaces with largest S3S^3 extendable abelian symmetry.
method Derived a formula involving LL and KK to calculate the maximal systole.
result The maximal systole is given by 2arccoshK2\mathrm{arccosh} K.

We study 3-valent maps Mn(p,q)M_n(p,q) consisting of a ring of nn qq-gons whose the inner and outer domains are filled by pp-gons, for p,q3p,q \ge 3. We describe a domain in the space of parameters pp, qq, and nn, for which such a map may exist. With four infinite sequences of maps - prisms Mp(p3,4)M_p(p \ge 3,4), $M_4(4,q \g…

2000-05-27abs ↗pdf ↗

The study examines surgeries between lens spaces and identifies specific conditions for distance one surgeries.

problem Identifying conditions for distance one surgeries between lens spaces.
method Analyzes surgeries between lens spaces L(p,1)L(p,1) and L(n,1)L(n,1), and band surgeries from T(2,p)T(2,p) to T(2,n)T(2,n).
result Specific conditions for obtaining lens spaces by distance one surgeries are identified.

We explore efficient neural architecture search methods and show that a simple yet powerful evolutionary algorithm can discover new architectures with excellent performance. Our approach combines a novel hierarchical genetic representation scheme that imitates the modularized design pattern commonly adopted by human ex…

2017-11-01abs ↗pdf ↗

We consider here 6-regular plane graphs whose faces have size 1, 2 or 3. In Section 2 a practical enumeration method is given that allowed us to enumerate them up to 53 vertices. Subsequently, in Section 3 we enumerate all possible symmetry groups of the spheres that showed up. In Section 4 we introduce a new Goldberg-…

2010-07-27abs ↗pdf ↗

We calculate the knot invariant coming from the Teichmüller TQFT [AK1]. Specifically we calculate the knot invariant for the complement of the knot 616_1 both in the original [AK1] and the new formulation of the Teichmüller TQFT [AK2] for the one-vertex H-triangulation of (S3,61)(S^3,6_1). We show that the two formulations …

2016-12-21abs ↗pdf ↗

The paper calculates the Kobayashi-Royden metric on a punctured sphere and finds rational coefficients.

problem Calculating the Kobayashi-Royden metric on a punctured sphere.
method Explicit formula and asymptotic expansion using exponential Bell polynomials.
result The coefficients in the asymptotic expansion of the Kobayashi-Royden metric on the punctured sphere are rational numbers.

Fine-tuning large pre-trained models is an effective transfer mechanism in NLP. However, in the presence of many downstream tasks, fine-tuning is parameter inefficient: an entire new model is required for every task. As an alternative, we propose transfer with adapter modules. Adapter modules yield a compact and extens…

2019-02-02abs ↗pdf ↗

Study variational properties of cone structures with infinitesimal symmetry.

problem Variational properties of cone structures with infinitesimal symmetry.
method Establishing a correspondence between cone structures and geometric structures via symmetry reduction and quasi-contactification.
result Invariant conditions for specific properties of cone structures.

If a continuous map f: X->Q is approximable arbitrary closely by embeddings X->Q, can some embedding be taken onto f by a pseudo-isotopy? This question, called Isotopic Realization Problem, was raised by Shchepin and Akhmet'ev. We consider the case where X is a compact n-polyhedron, Q a PL m-manifold and show that the …

2001-01-05abs ↗pdf ↗

Geometric observables detect financial regime shifts with high accuracy.

problem Detecting regime shifts in financial markets.
method Extracted four geometric observables from equity-index returns and evaluated them against various baseline methods.
result The Berry Phase Rate achieves an unbiased out-of-sample median Cohen's d of 0.72, significantly reducing false alarms.

CONFINE enhances neural networks' interpretability without sacrificing accuracy.

problem Lack of interpretability in deep neural networks, especially in healthcare.
method CONFINE uses conformal prediction to generate prediction sets with robust uncertainty estimates.
result CONFINE achieves correct efficiency up to 3.3% higher than original accuracy.

The study extends SPT to account for real-world transaction costs, improving portfolio performance.

problem Real-world transaction costs affect portfolio performance, especially during market stress.
method Developed a continuous-time model with stochastic transaction costs and derived lower bounds for cost-adjusted wealth.
result Functionally generated portfolios can still achieve relative arbitrage after accounting for transaction costs.

Classifies semi-equivelar gems on surfaces with Euler characteristic -1.

problem Classifying semi-equivelar gems on surfaces with negative Euler characteristic.
method Regular colored graphs representing PL dd-manifolds, cyclic sequence of face degrees around vertices.
result Identifies 12 types of semi-equivelar gems for surfaces with Euler characteristic -1.