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~ similar to 2606.22636· 19 results

cs.DSTheoreticalRecentJun 16, 2026

Four-Cycle Counting in Low-Degeneracy Graph Streams

Sebastian Lüderssen, Stefan Neumann, Pan Peng

This paper proposes two algorithms for approximating the number of four-cycles in graph edge streams, improving upon existing theoretical bounds and handling non-concentrated four-cycles in one-pass.

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cs.DScs.CCmath.COTheoreticalRecentJul 17, 2026

Contextual Fraction on Permutation Gain Graphs: Exact Algorithms, Query Lower Bounds, and Dynamic Maintenance

Ronald Katende

This paper identifies a tractability island inside the contextual-fraction problem by collapsing it to a fixed-point calculation for a specific class of permutation-transport models.

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cs.LGcs.CRRecentMay 7, 2026

Trade-off Functions for DP-SGD with Subsampling based on Random Shuffling: Tight Upper and Lower Bounds

Marten van Dijk, Murat Bilgehan Ertan

The paper provides a tight, transparent, and closed-form analysis of the trade-off function for Differentially Private SGD using random shuffling, significantly improving upon previous methods and est…

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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.CRcs.DSRecentApr 30, 2026

Variational and Majorization Principles in Lattice Reduction

Javier Blanco-Romero, Florina Almenares Mendoza

The paper uses majorization theory to analyze lattice reduction, showing that local swaps smooth the Gram-Schmidt profile and deriving variational and telescoping identities for the worst-case profile…

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cs.DScs.DCTheoreticalRecentJul 27, 2026

Parallel Spectral Graph Sparsification via Low Diameter Decompositions

Yves Baumann, Gernot Zöcklein

A new solver-free parallel spectral sparsification algorithm for weighted graphs is presented, relying on low-diameter decompositions and independent sampling, eliminating dependence on target approxi…

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cs.CCcs.DSTheoreticalRecentJul 8, 2026

Gap-Majority Lemmas in Communication Complexity

Pachara Sawettamalya, Huacheng Yu

The paper proves an information-theoretically optimal gap-majority lemma in the two-player randomized communication model, achieving the correct linear scaling and constant-constant tradeoff.

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quant-phcs.CCcs.DSRecentMay 28, 2026

Elfs, transducers and quantum walks

Simon Apers, Jérémie Roland, Yuxin Zhang

This paper introduces Electric Flow Sampling (elfs) as a zero-error quantum walk primitive and uses it to derive improved quantum algorithms for various graph problems, including semi-supervised learn…

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math.PRcs.DSTheoreticalRecentJun 25, 2026

A simple proof of rapid mixing on random regular graphs beyond uniqueness

Andreas Göbel, Matthew Jenssen, Marcus Michelen, Marcus Pappik +2 more

Chen et al. prove a Poincaré inequality for Glauber dynamics of hard-core model on random regular graphs using Bochner--Bakry--Émery approach.

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math.STcs.CCcs.DSRecentMay 28, 2026

Low-degree estimation thresholds in planted hypergraphs and tensor PCA

Daniel Fu, Youngtak Sohn

The paper analyzes low-degree estimation thresholds for recovering hidden signals in planted hypergraphs and tensor PCA, establishing sharp phase transitions and providing polynomial-time recovery alg…

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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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cs.DScs.CRTheoreticalRecentJul 21, 2026

Private Approximation of Graph Spectra and Cuts via Spectral Amplifiers

Chenglin Fan, Jingcheng Liu, Pan Peng, Hangyu Xu +1 more

This paper presents a polynomial-time differentially private algorithm for releasing a synthetic graph that approximates cut sizes in an input graph with error bound.

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cs.DSmath.PRmath.STTheoreticalRecentJun 16, 2026

Spectral recovery of a planted triangle-dense subgraph

Sam van der Poel, Cheng Mao, Benjamin McKenna

This paper studies the triangle-densest-$k$-subgraph problem in an average-case model and proposes spectral and semidefinite algorithms for its recovery.

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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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math.COcs.DMTheoreticalRecentJul 1, 2026

Annihilation, Independence, and Residue: Sharp Matching Bounds for the Annihilation Gap and a TxGraffiti Application

Ohr Kadrawi, Vadim E. Levit

This paper provides bounds on the difference between the annihilation number and independence number of a finite simple graph, and proves these bounds for various types of graphs.

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cs.CCcs.DScs.ITTheoreticalRecentJul 16, 2026

Space-Entropy Lower Bounds for Random Sampling

Thomas L. Draper, Feras A. Saad

This paper proves space lower bounds for entropy-efficient random sampling using i.i.d. uniform bits.

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cs.DMmath.NATheoreticalRecentJul 16, 2026

Perfectly equidistributed Quasi-Monte Carlo sequences from Artin-Schreier polynomials

Nicolas Bonneel, David Coeurjolly, Victor Ostromoukhov

This paper presents conditions for achieving optimal uniformity in Quasi-Monte Carlo estimators using Sobol' sequences and Artin-Schreier polynomials.

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