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20 results for “Familiarity with random matrix theory and maximal coding rate reduction (MCR${^2}$)”

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math.PRcs.ITmath.MGTheoreticalRecentJul 15, 2026

Stochastic Domination of Gaussian Maxima: A Resolution to the Weak Simplex Conjecture

Abhijeet Mulgund

The paper proves a stochastic comparison for Gaussian maxima, resolving the Weak Simplex Conjecture and proving the Simplex Mean Width Conjecture.

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cs.DSTheoreticalRecentJul 17, 2026

A Unified Theory of Sparsification

Sanjeev Khanna, Aaron Putterman, Madhu Sudan

This paper introduces a structural theorem for the sparsifiability of real-valued codes, which generalizes both combinatorial and continuous notions of sparsification.

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cs.ITcs.CCcs.CRTheoreticalRecentJun 23, 2026

Discrepancy for Random Linear Codes

Dean Doron, Tal Leonov, Jonathan Mosheiff, Henrique Navas +2 more

This paper proves that random linear codes have nearly optimal discrepancy properties in various regimes, extending classical results and enabling new applications.

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cs.ITmath.COTheoreticalRecentJun 12, 2026

Block Tensor Rank of Sum-Rank Metric Codes

Huimin Lao, Huy Pham, Hoang Ta, Van Khu Vu

This paper introduces and studies the block tensor rank of sum-rank metric codes, showing its additive decomposition and deriving lower bounds.

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cs.DScs.CRmath.NTRecentMay 17, 2026

Module Lattice Security (Part III): Structured CVP Distance on the Log-Unit Lattice

Ming-Xing Luo

The paper analyzes the structured CVP distance on the log-unit lattice of cyclotomic fields, significantly reducing the conjectured CDPR factor for the ML-KEM cryptosystem from exponential to sub-poly…

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math.STcs.ITTheoreticalRecentJul 9, 2026

Low-Rank Matrix Recovery via Heavy-Tailed Quadratic Sampling

Gao Huang, Song Li

This paper establishes recovery guarantees for low-rank Hermitian matrices from quadratic sampling matrices under the assumption of finite 4+δ moments of the entries.

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stat.MLcs.CCcs.DSTheoreticalRecentJul 7, 2026

Boosting with List-Decodable Codes

Addison Prairie, Li-Yang Tan

A new boosting algorithm that strong learns concept classes closed under O(log 1/γ)-XOR using O(log 1/ε) calls to a γ-advantage weak learner and additional samples, by connecting boosting with list-de…

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math.PRcs.DSmath.COTheoreticalRecentJun 21, 2026

Spectral Gap for the Binary Fixed-Margin Swap Chain

Weibo Fu, Qian Qin, Guanyang Wang

This paper proves an inverse-polynomial spectral-gap bound for the lazy swap chain on binary matrices with prescribed row and column sums, which is a standard sampler for fixed-margin null models.

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cs.DSTheoreticalRecentJul 9, 2026

Locally Approximating the Top Eigenvector of Bounded Entry Matrices

Nicolas Menand, Erik Waingarten

This paper presents a local computation algorithm to approximate the top eigenvector of a symmetric matrix with entries between -1 and 1, building on Swartworth and Woodruff's work.

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math.PRcs.ITTheoreticalRecentJun 23, 2026

Conditioning of incoherent sub-dictionaries sampled from a coherent dictionary

Karin Schnass

This paper shows that sub-dictionaries sampled from a coherent dictionary using a coherence rejective Poisson sampling model are well-conditioned with high probability, as long as their expected size…

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cs.CCcs.DSTheoreticalRecentJul 22, 2026

The Polynomial-Time Low-Degree Conjecture is False

Songtao Mao

The polynomial-time low-degree conjecture, which predicts that low-degree indistinguishability, a uniform null distribution, permutation invariance, and independent resampling imply polynomial-time ha…

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cs.DSmath.COTheoreticalRecentJul 9, 2026

Optimal Sparsifiers for Abelian Cayley Graphs

Arpon Basu, Pravesh K. Kothari, Raghu Meka, Stefan Tudose

This paper proves that for any finite abelian group, there exists a spectral sparsifier for its Cayley graph with log(|G|) generators. This result improves upon previous work for constructing code spa…

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cs.ITTheoreticalRecentJun 19, 2026

Error Exponent Bounds for Optimal Short-Read Clustering

Yoav Chachamovitz, Nir Weinberger

This paper derives bounds on the probability of incorrect clustering of noisy short sequences using statistically optimal rules, focusing on DNA storage decoders.

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math.CAcs.CCmath.COTheoreticalRecentJul 15, 2026

Towards a characterization of idempotent Schur multipliers

Marcel K. Goh, Hamed Hatami

This paper shows that any boolean matrix with bounded factorization norm can be expressed as a signed sum of blow-up identity matrices, and this result has applications to matrix sequences and complex…

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