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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 virtual derivative

Study virtual fundamental classes of derived manifolds, proving invariant vanishes.

problem Computing virtual fundamental classes for derived manifolds.
method Combining derived differential geometry and cosection localization.
result Stable pair invariants of hyperkähler fourfolds are zero.

Continues work on derived manifolds and symplectic schemes, constructing virtual classes.

problem Constructing virtual fundamental classes for derived manifolds and schemes.
method Cosection localization, reduced virtual fundamental classes, and applications to Donaldson-Thomas theory.
result Virtual fundamental classes for (2)(-2)-shifted symplectic derived schemes are consistent with algebraic and differential geometric constructions.

In this paper we derive an effective equation for derivative pricing which accounts for the presence of virtual arbitrage opportunities and their elimination by the market. We model the arbitrage return by a stochastic process and find an equation for the average derivative price. This is an integro-differential equati…

1999-02-03abs ↗pdf ↗

Let (X,ωX)({\bf X},ω_{\bf X}^*) be a separated, 2-2-shifted symplectic derived C\mathbb C-scheme, in the sense of Pantev, Toen, Vezzosi and Vaquie arXiv:1111.3209, of complex virtual dimension vdimCX=nZ{\rm vdim}_{\mathbb C}{\bf X}=n\in\mathbb Z, and XanX_{\rm an} the underlying complex analytic topological space. We prove that …

2015-04-02abs ↗pdf ↗

A virtual link can be understood as a link in a trivial I-bundle over an orientable compact surface with genus. A twisted virtual link is a link in a trivial I-bundle over a not-necessarily orientable compact surface. A twisted virtual birack is an algebraic structure with axioms derived from the twisted virtual Reidem…

2011-05-27abs ↗pdf ↗

We introduce an algebraic structure we call semiquandles whose axioms are derived from flat Reidemeister moves. Finite semiquandles have associated counting invariants and enhanced invariants defined for flat virtual knots and links. We also introduce singular semiquandles and virtual singular semiquandles which define…

2009-01-27abs ↗pdf ↗

Given a virtual knot KK, we construct a group VGKVG_K called the virtual knot group, and we use the elementary ideals of VGKVG_K to define invariants of KK called the virtual Alexander invariants. For instance, associated to the k=0k=0 ideal is a polynomial HK(s,t,q)H_K(s,t,q) in three variables which we call the virtual Alexa…

2014-09-04abs ↗pdf ↗

The paper characterizes crystallographic groups derived from virtual braid and twin groups.

problem Characterizing crystallographic groups from virtual braid and twin groups.
method Analyzing quotients of virtual braid and twin groups by their commutator subgroups.
result The quotients of virtual braid and twin groups by their commutator subgroups are crystallographic groups.

This paper describes a polynomial invariant of virtual knots that is defined in terms of an integer labeling of the virtual knot diagram. This labeling is seen to derive from an essentially unique structure of affine flat biquandle for flat virtual diagrams. The invariant is discussed in detail with many examples,inclu…

2012-11-07abs ↗pdf ↗

A polynomial invariant of virtual links, arising from an invariant of links in thickened surfaces introduced by Jaeger, Kauffman, and Saleur, is defined and its properties are investigated. Examples are given that the invariant can detect chirality and even non-invertibility of virtual knots and links. Furthermore, it …

1999-12-21abs ↗pdf ↗

Study on singular twisted links and virtual braids, extending knot theory concepts.

problem Extending knot theory concepts to singular twisted links and virtual braids.
method Definition and analysis of singular twisted virtual braids and their monoid structure.
result Presentation of monoid and reduced monoid for singular twisted virtual braids.

We generalize the Arbitrage Pricing Theory (APT) to include the contribution of virtual arbitrage opportunities. We model the arbitrage return by a stochastic process. The latter is incorporated in the APT framework to calculate the correction to the APT due to the virtual arbitrage opportunities. The resulting relatio…

1999-02-03abs ↗pdf ↗

It is an open question whether there are Vassiliev invariants that can distinguish an oriented knot from its inverse, i.e., the knot with the opposite orientation. In this article, an example is given for a first order Vassiliev invariant that takes different values on a virtual knot and its inverse. The Vassiliev inva…

2002-03-13abs ↗pdf ↗

This paper connects virtual biquandles to biquandles for virtual link colorings.

problem Extending invariants from biquandles to virtual biquandles.
method Establishing equivalence between two representations of virtual braid groups and introducing new labeling rules.
result The number of colorings of a virtual link by virtual biquandles can be recovered from colorings by biquandles.

New polynomial invariants defined for long virtual knots.

problem Defining and studying polynomial invariants for long virtual knots.
method Intersection numbers of cycles on a closed surface, considering crossing order.
result Intersection polynomials are finite-type invariants of degree two under crossing changes, but not under virtualizations.

The virtual Betti number conjecture states that any hyperbolic three-manifold has a finite cover with positive first Betti number. We show that this would follow if it were known that the derived series of the fundamental group GG of a hyperbolic three-manifold satisfies a certain stability property. The stability pro…

2003-06-25abs ↗pdf ↗

Paper defines doodles on closed surfaces, unifying classical and virtual theories.

problem Classifying doodles on closed surfaces, especially non-orientable ones.
method Introducing twisted virtual doodles, defining twin groups, and proving Alexander- and Markov-type theorems.
result Unified theory of doodles, showing trivial center and residually finite properties.

The derived group of a permutation representation, introduced by R.H. Crowell, unites many notions of knot theory. We survey Crowell's construction, and offer new applications. The twisted Alexander group of a knot is defined. Using it, we obtain twisted Alexander modules and polynomials. Also, we extend a well-known t…

2005-06-16abs ↗pdf ↗

Study of commutator subgroups and crystallographic quotients of virtual groups.

problem Investigate commutator subgroups and crystallographic quotients of virtual groups.
method Derived explicit finite presentations and proved crystallographic properties.
result Explicit finite presentations of commutator subgroups and crystallographic quotients.

This study simplifies verification of invariants in oriented virtual knots.

problem Verifying invariants of oriented virtual knots is complex and time-consuming.
method Identifying a minimal generating set of oriented virtual Reidemeister moves.
result A four-element subset serves as a generating set for oriented virtual Reidemeister moves.

Two new polynomial invariants for long virtual knots.

problem Defining new polynomial invariants for long virtual knots.
method Introducing V1(K;t)V_1(K;t) and V2(K;t)V_2(K;t), establishing properties, and showing realizability.
result First derivatives of V1(K;t)V_1(K;t) and V2(K;t)V_2(K;t) at t=1t=1 define finite type invariants of degree three.

The paper introduces derivations for quandles and their properties.

problem Defining and studying derivations for quandles.
method Introducing derivations as twisted analogues of quandle homomorphisms and proving properties of derived quandles.
result For each quandle QQ, there exists a unique derived quandle AQ\mathcal{A}_Q with specific properties.

Study uses sentiment analysis to predict cryptocurrency token returns in virtual reality.

problem Predicting cryptocurrency token returns in virtual reality economies.
method Used BERT for sentiment analysis and developed LSTM models integrating multi-modal features.
result Multi-modal model significantly outperforms price-only baseline in prediction accuracy.

KANEL combines models for early hit enrichment in virtual screening.

problem Assessing model accuracy in chemical bioactivity predictions.
method Ensemble workflow using Kolmogorov-Arnold Networks (KANs) and other models.
result Improves early hit enrichment metrics like PPV@N.

Joyce has shown that the fundamental quandle of a classical knot can be derived from consideration of the fundamental group and the peripheral structure of the knot, and also that the group and much of the peripheral structure can be recovered from the quandle. We generalize these results to arbitrary dimensions, and a…

2009-05-25abs ↗pdf ↗

A method to reduce boundary over-exploration in Bayesian optimization.

problem Over-exploration of the boundary in Bayesian optimization.
method Virtual derivative sign observations at the boundary of the search space.
result Consistently reduces the number of evaluations required to optimize the objective.

We define a group-valued invariant of virtual knots and relate it to various other group-valued invariants of virtual knots, including the extended group of Silver-Williams and the quandle group of Manturov and Bardakov-Bellingeri. A virtual knot is called almost classical if it admits a diagram with an Alexander numbe…

2015-06-04abs ↗pdf ↗

The Jones polynomial's divisibility is analyzed via local moves on virtual links.

problem Divisibility of the Jones polynomial under local moves on virtual links.
method Developed a general decomposition for the Jones polynomial of virtual links and analyzed divisibility conditions for various local moves.
result Succinct divisibility conditions on the Jones polynomial of virtual links differing via local moves.

Derived differential manifolds are constructed using the usual homotopy theory of simplicial rings of smooth functions. They are proved to be equivalent to derived differential manifolds of finite type, constructed using homotopy sheaves of homotopy rings (D.Spivak), thus preserving the classical cobordism ring. This r…

2011-11-30abs ↗pdf ↗

This paper establishes a correspondence between biquandle and quandle colorings for classical and surface links.

problem Finding refined invariants for classical and surface links using biquandles.
method Explicit one-to-one correspondence between biquandle colorings and quandle colorings.
result Biquandle homotopy invariants and quandle homotopy invariants are equivalent.

Optimizes resource allocation for virtualized network functions based on performance profiles.

problem Mapping SLA performance requirements to dynamic virtualized infrastructure resources.
method Profile-based resource allocation using VNF performance datasets and machine learning models.
result A method to predict and recommend optimal resource allocation for network services.

Proves a generalized vanishing theorem for quasi-smooth stacks, with applications in K-theory and birational geometry.

problem Vanishing theorems for quasi-coherent sheaves on derived blow-ups of quasi-smooth stacks.
method Derived blow-ups, intrinsic blow-up theory, Kiem-Li-Savvas blow-up theory, virtual localization theorem, desingularization theorem, resolution of diagonal.
result Generalized vanishing theorem for quasi-coherent sheaves on derived blow-ups of quasi-smooth stacks.