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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.

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48 results for systolic index

The systole function has a universal index gap on moduli spaces.

problem Understanding the index gap of systole functions on moduli spaces.
method Analyzing Morse theory properties of systole functions on moduli spaces and their compactifications.
result There exists a universal constant C>0C>0 such that any critical point in Mg,n\mathcal M_{g,n} has Morse index at least Cloglog(g+n)C\log\log(g+n).

For any ε>0\varepsilon>0, we construct a closed hyperbolic surface of genus g=g(ε)g=g(\varepsilon) with a set of at most εg\varepsilon g systoles that fill, meaning that each component of the complement of their union is contractible. This surface is also a critical point of index at most εg\varepsilon g for the systole fun…

2019-04-03abs ↗pdf ↗

New lattices in higher rank contain a fixed 3-manifold group with increasing systole.

problem Finding lattices with a fixed 3-manifold group and large systole.
method Constructing arithmetic lattices in SL(8,R)SL(8,\mathbb{R}) with specific properties.
result Existence of lattices with large systole containing a fixed 3-manifold group.

A new systolic inequality for mod 2 systoles is established.

problem Bounding the product of mod 2 systoles in Riemannian manifolds.
method Analyzing the product of systoles of dimensions 1 and n-1 in closed manifolds with bounded local geometry.
result A systolic inequality is derived for the product of mod 2 systoles, showing a power-law relationship with volume.

We prove a new systolic volume lower bound for non-orientable n-manifolds, involving the stable 1-systole and the codimension 1 systole with coefficients in Z_2. As an application, we prove that Lusternik-Schnirelmann category and systolic category agree for non-orientable closed manifolds of dimension 3, extending our…

2005-04-01abs ↗pdf ↗

In this paper, we prove that the systolic volume of a closed aspherical 3-manifold is bounded below in terms of complexity. Systolic volume is defined as the optimal constant in a systolic inequality. Babenko showed that the systolic volume is a homotopy invariant. Moreover, Gromov proved that the systolic volume depen…

2015-09-25abs ↗pdf ↗

In this paper we investigate the systolic landscape of translation surfaces for fixed genus and fixed angles of their cone points. We furthermore study how the systoles of a translation surface relate to the systoles of its graph of saddle connections. This allows us to develop an algorithm to compute the systolic rati…

2018-09-27abs ↗pdf ↗

New finding links hyperbolic manifold systolic volume to triangulation complexity.

problem Understanding the relationship between systolic volume and triangulation complexity in hyperbolic manifolds.
method Proof based on Jørgensen and Thurston's theorem of hyperbolic volume.
result Systolic volume of hyperbolic manifolds is related to triangulation complexity.

For all systolic groups we construct boundaries which are EZ--structures. This implies the Novikov conjecture for torsion--free systolic groups. The boundary is constructed via a system of distinguished geodesics in a systolic complex, which we prove to have coarsely similar properties to geodesics in CAT(0) spaces.

2008-08-17abs ↗pdf ↗

The aim of this text is to present the concept of systole of a compact riemannian manifold and to give an overview of systolic geometry. I will also present the "regularization technique", which leads to major results in systolic geometry. I will detail how this technique allows to link the systolic volume of some clos…

2015-06-25abs ↗pdf ↗

The paper analyzes systoles of complex projective spaces under various metrics.

problem Behavior of systoles in complex projective spaces for different metrics.
method Integral geometric techniques and careful analysis of systole functional.
result Balanced metrics locally minimize the systole on volume-normalized metrics.

Extends Gromov's optimal systolic inequality to manifolds with specific cohomology properties.

problem Finding optimal systolic inequalities for manifolds with complex cohomology structures.
method Extends Gromov's inequality to manifolds with fundamental cohomology classes as cup products of 2-dimensional classes.
result Provides an optimal systolic inequality for a new class of manifolds.

Study finds bounds for systole length on arithmetic punctured spheres.

problem Finding the shortest essential curve on arithmetic punctured spheres.
method Correspondence between surfaces and planar triangulations to bound systole length.
result Arithmetic surfaces do not achieve maximal systole length for n=7,10,11n=7,10,11.

Sharp systolic inequality for invariant tight contact forms on S1-bundles over S2.

problem Finding the shortest period of closed Reeb orbits on invariant tight contact forms.
method Proving a sharp systolic inequality based on the Euler class of the bundle.
result A behavior of the systolic inequality depends on the Euler class of the bundle.

Paper proves optimal systolic inequality for manifolds with positive triRic curvature.

problem Optimal systolic inequality for manifolds with positive triRic curvature.
method Stable weighted kk-slicing, volume comparison theorem, and metric deformation.
result Proves an optimal systolic inequality and characterizes the equality case.

We give the first example of systolic freedom over torsion coefficients. The phenomenon is a bit unexpected (contrary to a conjecture of Gromov's) and more delicate than systolic freedom over the integers.

1999-11-17abs ↗pdf ↗

We prove optimal systolic inequalities on Finsler Mobius bands relating the systole and the height of the Mobius band to its Holmes-Thompson volume. We also establish an optimal systolic in- equality for Finsler Klein bottles of revolution, which we conjecture to hold true for arbitrary Finsler metrics. Extremal metric…

2015-03-04abs ↗pdf ↗

For a translation surface, we define the systole to be the length of the shortest saddle connection. We give a characterization of the maxima of the systole function on a stratum, and give a family of examples providing local but nonglobal maxima on each stratum of genus at least three. We further study the relation be…

2017-07-17abs ↗pdf ↗

We show that for closed orientable manifolds the kk-dimensional stable systole admits a metric-independent volume bound if and only if there are cohomology classes of degree kk that generate cohomology in top-degree. Moreover, it turns out that in the nonorientable case such a bound does not exist for stable systoles…

2007-08-20abs ↗pdf ↗