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In addition to inherent computational challenges, the absence of a canonical method for quantifying `persistence' in multi-parameter persistent homology remains a hurdle in its application. One of the best known quantifications of…

代数拓扑 · 数学 2024-07-10 Nathaniel Clause , Woojin Kim , Facundo Mémoli

We compare different periodic point invariants for families of maps parameterized over a compact manifold. Malkiewich and Ponto showed that, in the case of a single map, the Fuller trace is equivalent to the collection of Reidmeister traces…

代数拓扑 · 数学 2025-08-27 Lucas Williams

The use of topological persistence in contemporary data analysis has provided considerable impetus for investigations into the geometric and functional-analytic structure of the space of persistence modules. In this paper, we isolate a…

代数拓扑 · 数学 2019-12-12 Peter Bubenik , Vin de Silva , Vidit Nanda

Persistence modules are representations of products of totally ordered sets in the category of vector spaces. They appear naturally in the representation theory of algebras, but in recent years they have also found applications in other…

代数拓扑 · 数学 2024-11-04 Steve Oudot

Lifted Reed-Solomon and multiplicity codes are classes of codes, constructed from specific sets of $m$-variate polynomials. These codes allow for the design of high-rate codes that can recover every codeword or information symbol from many…

信息论 · 计算机科学 2021-10-12 Lukas Holzbaur , Rina Polyanskaya , Nikita Polyanskii , Ilya Vorobyev , Eitan Yaakobi

A new variant of bit interleaved coded modulation (BICM) is proposed. In the new scheme, called Parallel BICM, L identical binary codes are used in parallel using a mapper, a newly proposed finite-length interleaver and a binary dither…

信息论 · 计算机科学 2010-08-18 Amir Ingber , Meir Feder

In this paper, diversity analysis of bit-interleaved coded multiple beamforming (BICMB) is extended to the case of general spatial interleavers, removing a condition on their previously known design criteria and quantifying the resulting…

信息论 · 计算机科学 2009-09-29 Hong Ju Park , Ender Ayanoglu

Certain classes of multiparameter persistence modules may be encoded as signed barcodes, represented as points in a polyhedral subset of Euclidean space, we refer to as signed persistence diagrams. These signed persistence diagrams exist in…

代数拓扑 · 数学 2025-10-14 Peter Bubenik , Zachariah Ross

We show that fiberwise stable vector bundles are preserved by relative Fourier-Mukai transforms between elliptic threefolds with relative Picard number one. Using these bundles we define new invariants of elliptic fibrations, and we relate…

代数几何 · 数学 2007-05-23 Andrei Caldararu

This paper presents a new explicit construction for locally repairable codes (LRCs) for distributed storage systems which possess all-symbols locality and maximal possible minimum distance, or equivalently, can tolerate the maximal number…

信息论 · 计算机科学 2013-01-29 Natalia Silberstein , Ankit Singh Rawat , O. Ozan Koyluoglu , Sriram Vishwanath

Multiparameter persistent homology has been largely neglected as an input to machine learning algorithms. We consider the use of lattice-based convolutional neural network layers as a tool for the analysis of features arising from…

代数拓扑 · 数学 2022-09-01 Hans Riess , Jakob Hansen , Robert Ghrist

The Harder-Narasimhan type of a quiver representation is a discrete invariant parameterised by a real-valued function (called a central charge) defined on the vertices of the quiver. In this paper, we investigate the strength and…

表示论 · 数学 2026-03-27 Marc Fersztand , Emile Jacquard , Vidit Nanda , Ulrike Tillmann

A standard multimode optical fiber can be used as a general purpose spectrometer after calibrating the wavelength dependent speckle patterns produced by interference between the guided modes of the fiber. A transmission matrix was used to…

光学 · 物理学 2017-03-30 Brandon Redding , Sebastien M. Popoff , Hui Cao

While persistent homology has taken strides towards becoming a wide-spread tool for data analysis, multidimensional persistence has proven more difficult to apply. One reason is the serious drawback of no longer having a concise and…

代数拓扑 · 数学 2018-12-20 Mickaël Buchet , Emerson G. Escolar

Fiber-reinforced ceramic-matrix composites are advanced materials resistant to high temperatures, with application to aerospace engineering. Their analysis depends on the detection of embedded fibers, with semi-supervised techniques usually…

图像与视频处理 · 电气工程与系统科学 2021-01-18 Alexandre Fioravante de Siqueira , Daniela Mayumi Ushizima , Stéfan van der Walt

We define notions of differentiability for maps from and to the space of persistence barcodes. Inspired by the theory of diffeological spaces, the proposed framework uses lifts to the space of ordered barcodes, from which derivatives can be…

代数拓扑 · 数学 2021-05-05 Jacob Leygonie , Steve Oudot , Ulrike Tillmann

Lifted Reed-Solomon codes, a subclass of lifted affine-invariant codes, have been shown to be of high rate while preserving locality properties similar to generalized Reed-Muller codes, which they contain as subcodes. This work introduces a…

信息论 · 计算机科学 2021-04-22 Lukas Holzbaur , Nikita Polyanskii

A recent work by Lesnick and Wright proposed a visualisation of $2$D persistence modules by using their restrictions onto lines, giving a family of $1$D persistence modules. We give a constructive proof that any $1$D persistence module with…

表示论 · 数学 2020-03-25 Mickaël Buchet , Emerson G. Escolar

We address combinatorial problems that can be formulated as minimization of a partially separable function of discrete variables (energy minimization in graphical models, weighted constraint satisfaction, pseudo-Boolean optimization, 0-1…

计算机视觉与模式识别 · 计算机科学 2015-05-05 Alexander Shekhovtsov

We study a new bi-Lipschitz invariant \lambda(M) of a metric space M; its finiteness means that Lipschitz functions on an arbitrary subset of M can be linearly extended to functions on M whose Lipschitz constants are enlarged by a factor…

度量几何 · 数学 2007-05-23 A. Brudnyi , Yu. Brudnyi