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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.

169,341 papers · 148 categories

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48 results for Characterization

Characterizes toroidally alternating knots topologically.

problem Defining and characterizing toroidally alternating knots.
method Extending Howie's characterization to toroidally alternating knots and providing necessary and sufficient conditions.
result Necessary and sufficient conditions for a knot to be toroidally alternating.

The study provides homological characterizations for QQ-manifolds and l2l_2-manifolds.

problem Density of maps in characterizing QQ-manifolds and l2l_2-manifolds.
method Investigates weakening the density of ZnZ_n-maps and ZZ-maps to homological maps.
result Obtains homological characterizations for QQ-manifolds and l2l_2-manifolds.

The paper characterizes Alexander quandles of finite groups.

problem Characterizing Alexander quandles of finite groups.
method Using group theory and automorphism groups, the paper provides characterizations of Alexander quandles.
result Generalized Alexander quandles of finite groups are characterized in terms of automorphism groups and underlying groups.

No single parameter characterizes the learnability of probability distributions.

problem Finding a parameter to characterize the learnability of probability distributions.
method Analyzing various notions of learnability and showing impossibility results.
result No such parameter exists for characterizing learnability of probability distributions.

Study characterizes geodesic ray transform on surfaces, isolating and separating sub-ranges.

problem Characterizing the range of the attenuated geodesic ray transform on surfaces.
method Isolating and separating sub-ranges of sums of functions and one-forms, deriving new inversion formulas.
result Range characterizations and new inversion formulas for geodesic ray transform.

In this paper, we give some characterizations for spacelike helices in Minkowski space-time. We find the differential equations characterizing the spacelike helices and also give the integral characterizations for these curves in Minkowski space-time.

2010-06-03abs ↗pdf ↗

We review several results related to the characterization of polyhedra in hyperbolic 3-space. In particular we present Rivin's theorem that gives a characterization of compact convex hyperbolic polyhedra, and Hodgson's proof of the Adreev's theorem. We also review the analogous characterization of ideal polyhedra, and …

2010-06-23abs ↗pdf ↗

Characterizes conditions for quotient spaces of decompositions to be manifolds.

problem Conditions for quotient spaces of decompositions to be manifolds.
method Generalized characterizations of upper semi-continuity for decomposition into one for a class decomposition.
result Characterizations of necessary and sufficient conditions for quotient spaces of decompositions to be kk-manifolds (k=1,2k = 1, 2).

The paper aims to develop new combinatorial dimensions for bounded memory learning.

problem Characterize bounded memory learning using combinatorial dimensions.
method Proposes a candidate solution based on the SQ dimension of neighboring distributions and proves upper and lower bounds.
result Characterizes bounded memory learning in a specific parameter regime, matching equivalence between bounded memory and SQ learning.

Characterizes the range of a tensor field transform in Schwartz space.

problem Range characterization of a tensor field transform in Schwartz space.
method Differential and integral equations for characterizing the range in different dimensions.
result Range characterization for the operator on Schwartz space of rank m tensor fields.

The paper characterizes geometric infiniteness for convergence group actions using orbit uniform metrics.

problem Characterizing geometric infiniteness for convergence group actions.
method Introducing orbit uniform metrics and proving properties of discrete orbits.
result Characterization of geometric infiniteness in terms of uncountability of non-conical limit points and existence of escaping sequences.

New conditional risk measures called conditional generalized quantiles defined and characterized.

problem Developing new risk measures for dynamic risk assessment.
method Propose and characterize conditional generalized quantiles using expected utility model and equivalent conditions.
result Characterized conditional generalized quantiles as well-defined and equivalent to a conditional first order condition.

In this paper we characterize the degenerate elliptic equations F(D^2u)=0 whose viscosity subsolutions, (F(D^2u) \geq 0), satisfy the strong maximum principle. We introduce an easily computed function f(t) for t > 0, determined by F, and we show that the strong maximum principle holds depending on whether the integral …

2013-09-06abs ↗pdf ↗

Study characterizes kernel of mixed ray transform on simple surfaces.

problem Characterizing the kernel of mixed ray transform on simple surfaces.
method Characterization of the kernel through analysis of mixed ray transform on simple 2D Riemannian manifolds.
result Characterization of the kernel of the mixed ray transform on simple surfaces.