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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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15294458 · May 202619922001200920182026
48 results for integer lifts

We provide linear lower bounds for fρ(L)f_ρ(L), the smallest integer so that every curve on a fixed hyperbolic surface (S,ρ)(S,ρ) of length at most LL lifts to a simple curve on a cover of degree at most fρ(L)f_ρ(L). This bound is independent of hyperbolic structure ρρ, and improves on a recent bound of Gupta-Kapovich. When $…

2015-01-01abs ↗pdf ↗

We lift the characteristic-2 totally twisted Khovanov homology of Roberts and Jaeger to a theory with integer coefficients. The result is a complex computing reduced odd Khovanov homology for knots. This complex is equivalent to a spanning-tree complex whose differential is explicit modulo a sign ambiguity coming from …

2011-09-23abs ↗pdf ↗

The cohomology ring with coefficients in Zp\Z_p, where pp is a prime integer, of a Seifert manifold MM, orientable or not orientable is obtained from a simplicial decomposition of MM. Many choices must be made before applying Alexander-Whitney formula to get the cup-products. The most difficult choices are those of …

2012-02-13abs ↗pdf ↗

We develop a method of calculation for the symplectic Floer homology of composite knots. The symplectic Floer homology of knots defined in \cite{li} naturally admits an integer graded lifting, and it formulates a filtration and induced spectral sequence. Such a spectral sequence converges to the symplectic homology of …

1998-02-05abs ↗pdf ↗

For every finite collection of curves on a surface, we define an associated (semi-)norm on the first homology group of the surface. The unit ball of the dual norm is the convex hull of its integer points. We give an interpretation of these points in terms of certain coorientations of the original collection of curves. …

2016-04-22abs ↗pdf ↗

Symmetric function LM,NL_{M,N} lifts torus link homology.

problem Computing the triply-graded Khovanov-Rozansky homology of torus links.
method Defined a symmetric function LM,NL_{M,N} and showed it satisfies a recursion for torus link homology.
result Triply-graded Khovanov-Rozansky homology of torus links is a specialization of LM,NL_{M,N}.

Study lift metrics and connections on tangent bundles of Riemannian manifolds.

problem Investigate geometric properties of tangent bundles and their lifts.
method Analyze lift metrics and connections on TMTM of (M,g)(M,g), and study statistical and Codazzi couples.
result Prove a result on 11-Stein and Osserman structures on TMTM.

Proves curvature bounds for submanifolds in negatively curved spaces.

problem Bounding the total squared mean curvature of submanifolds in negatively curved spaces.
method Analyzes the eigenvalue and curvature of submanifolds homotopic to a point in a negatively curved manifold.
result Establishes a new inequality relating the first eigenvalue and the total squared mean curvature of submanifolds.

In this paper, we define a complete lift for semisprays. If SS is a semispray on a manifold MM, its complete lift is a new semispray ScS^c on TMTM. The motivation for this lift is two-fold: First, geodesics for ScS^c correspond to the Jacobi fields for SS, and second, this complete lift generalizes and unifies previ…

2008-09-08abs ↗pdf ↗

Geometric structures are lifted to higher tangent bundles preserving statistical properties.

problem Lifting statistical structures to higher tangent bundles while maintaining their properties.
method Natural lifts of geometric objects and potentials to higher tangent bundles, preserving statistical manifold structures.
result Lifted statistical structures on higher tangent bundles maintain pseudo-Riemannian metrics and are again statistical manifolds.

In the present paper, we study complete and vertical lifts of tensor fields from a smooth manifold MM to its Weil bundle TAMT^A M defined by a Frobenius Weil algebra AA. For a Poisson manifold (M,w)(M,w), we show that the complete lift wCw^C and the vertical lift wVw^V of the Poisson tensor ww are Poisson tensors on $T^…

2009-07-31abs ↗pdf ↗

In this paper we continue to study equivariant pencil liftings and differential operators on the algebra of densities. We emphasize the role that the geometry of the extended manifold plays. Firstly we consider basic examples. We give a projective line of diff(MM)-equivariant pencil liftings for first order operators,…

2014-01-31abs ↗pdf ↗

The canonical trace and the Wodzicki residue on classical pseudodifferential operators on a closed manifold are characterised by their locality and shown to be preserved under lifting to the universal covering as a result of their local feature. As a consequence, we lift a class of spectral ζζ-invariants using lifted …

2016-03-07abs ↗pdf ↗

The paper constructs Sasakian lifts from Kähler manifolds and studies their properties.

problem Constructing Sasakian structures from Kähler manifolds and analyzing their geometric properties.
method Local construction of Sasakian manifolds from Kähler base using vector field operations.
result Existence and properties of αα-Sasakian Ricci solitons in Sasakian lifts.

The paper discusses symplectic lifts for actions on Lagrangian fibrations.

problem Understanding symplectic lifts for actions on Lagrangian fibrations.
method Describes symplectic cotangent lifts in terms of 1-cocycles and generalizes to complete Lagrangian fibrations.
result Symplectic lifts of actions for complete Lagrangian fibrations are understood in terms of cohomology.

This paper extends braid lifting to coloured braid groupoids for all simple disc covers.

problem Lifting braids to homeomorphisms on branched covers of the disc.
method Defines a map from a coloured braid groupoid to a mapping class groupoid for all simple covers of the disc.
result Characterizes the lift of every coloured braid, recovering classical lifting on liftable braids.

We construct some lift of an almost complex structure to the cotangent bundle, using a connection on the base manifold. This generalizes the complete lift defined by I.Sato and the horizontal lift introduced by K.Yano and S.Ishihara. We study some geometric properties of this lift and its compatibility with symplectic …

2005-07-04abs ↗pdf ↗

Defines lift of partial cohomological field theories and finds new bi-Hamiltonian structures.

problem Non-semisimple homogeneous partial cohomological field theories and their integrable systems.
method Lift procedure for Frobenius algebras and local polyvector fields.
result Examples of non-semisimple homogeneous partial cohomological field theories with second Hamiltonian structure.

Fenchel lifted networks improve neural network training without performance loss.

problem The difficulty and non-convexity of training deep neural networks.
method Introduces Fenchel lifted networks that represent activation functions as biconvex constraints and uses Lagrange Multipliers to create a lower bound of the training problem.
result Fenchel lifted networks match or outperform traditional neural networks in performance.

In Finsler geometry the complete lift vector fields have distinguished geometric significance. For example a vector field on a Finsler manifold is said to be conformal if its complete lift is conformal in usual sense. In this work we define a new Riemannian or Pseudo-Riemannian metric on TM derived from a Finsler metri…

2006-08-07abs ↗pdf ↗