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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.

168,742 papers · 148 categories

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1122 · Nov 201719922001200920172026
17 results for PK

Paper studies second order symmetric parallel tensors in generalized f.pk-space forms.

problem Exploring properties of second order symmetric parallel tensors in generalized f.pk-space forms.
method Analyzes the properties of second order symmetric parallel tensors and deduces the existence or non-existence of certain tensors and hypersurfaces.
result There does not exist second order skew-symmetric parallel tensor in f.pk-space form. There is no parallel hypersurface in a generalized f.pk-space form but there is semi-parallel hypersurface.

The paper clusters PK curves using ML, finding it useful for identifying similar patterns.

problem Improving drug development and patient outcomes through ML in pharmacogenomics.
method Unsupervised clustering of PK curves using various dissimilarity measures.
result Euclidean distance is most suitable for clustering PK curves, and clustering can validate pharmacogenomic results.

Euclidean systems and real PK arrangements linked via geometry.

problem Establishing a connection between Euclidean systems and real PK arrangements.
method Proving a correspondence between Euclidean \vee-systems and real PK arrangements, and showing homeomorphism of moduli spaces.
result Moduli space of Euclidean \vee-systems is homeomorphic to a polytope's interior, and hyperplane arrangements are simplicial.

The study finds PK cone metrics on complex manifolds near hyperplane arrangements.

problem Finding metrics on complex manifolds near singularities.
method Analyzing flat torsion-free meromorphic connections on \(\mathbb{C}^n\) with simple poles at hyperplanes.
result Metric completion of certain connections yields PK cone metrics on \(\mathbb{C}^n\).

We consider higher dimensional generalisations of normal almost contact structures, the so called f.pk-structures where parallelism spans a Lie algebra g (f.pk-g-structures). Two types of these structures are discussed. In the first case, we construct an almost complex structure on a product manifold mirroring K-struct…

2016-09-27abs ↗pdf ↗

Proves mapping class group of nonorientable surfaces can be generated by three torsions.

problem Generates mapping class group of nonorientable surfaces by three torsions.
method Proves using algebraic methods and properties of nonorientable surfaces.
result Proves mapping class group of nonorientable surfaces can be generated by three torsions.

Physics-Informed Neural Networks (PINNs) benchmarked against clinical estimator and reveal parameter identifiability

problem Chemotherapy pharmacokinetics (PK) with tissue concentration not measured
method Physics-Informed Neural Networks (PINNs) benchmarked against clinical estimator and reveal parameter identifiability
result PINN recovers tissue concentration and identifies non-identifiable parameters

We show that if KK is an L-space twisted torus knot Tp,pk±1l,mT^{l,m}_{p,pk \pm 1} with p2p \ge 2, k1k \ge 1, m1m \ge 1 and 1lp11 \le l \le p-1, then the fundamental group of the 33-manifold obtained by rs\frac{r}{s}-surgery along KK is not left-orderable whenever rs2g(K)1\frac{r}{s} \ge 2 g(K) -1, where g(K)g(K) is the genus of KK.

2019-03-17abs ↗pdf ↗

The paper calculates bounds for unknotting rational tangles using knot Floer homology.

problem Calculating the minimum number of rational replacements to unknot a tangle.
method From the link Floer complex, extract a lower bound for the rational unknotting number using knot Floer homology.
result The torsion obstruction is a lower bound for the proper rational unknotting number.

Let X be a compact Kahler orbifold without \C-codimension-1 singularities. Let D be a suborbifold divisor in X such that D \supset Sing(X) and -pK_X = q[D] for some p, q \in \N with q > p. Assume that D is Fano. We prove the following two main results. (1) If D is Kahler-Einstein, then, applying results from our previo…

2013-01-22abs ↗pdf ↗

A new stable similarity measure for time series using persistent homology.

problem Constructing a robust measure of time series similarity.
method Persistent homology for stability, bi-conditional periodicity score for similarity.
result Stability of the bi-conditional periodicity score under perturbations and dimension reduction.