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20 results for “Impossibility result”

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cs.CCTheoreticalRecentJul 8, 2026

Fixed Points, a Predictor-Impossibility Theorem, and Applications

Tom Altman

This paper introduces an activation hierarchy and proves a Predictor-Impossibility Theorem, showing that no effective predictor family can determine all stage languages. It also establishes a slice th…

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cs.CRRecentMay 28, 2026

Scarcity Is Not Enough: An Impossibility Result for Linear Sybil Cost Under Parallelizable Resources

Homayoun Maleki, Nekane Sainz, Jon Legarda, Igor Santos-Grueiro

The paper proves that for resources with structural parallelizability (like divisibility and transferability), it is impossible to enforce a linear cost for concentrating influence, demonstrating that…

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cs.DCTheoreticalRecentJul 27, 2026

Consensus In Asynchrony: Strictly Formal

Ivan Klianev

The authors resolve the contradiction between deterministic crash-tolerant consensus in a fully asynchronous environment and the FLP impossibility result by demonstrating that one protocol phase separ…

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cs.CLcs.AIcs.LGRecentMay 28, 2026

The Architecture of Errors: From Universal Impossibility to Patch-Local LLM Reliability

Mikhail L. Arbuzov, Lee Mosbacker, Sisong Bei, Ziwei Dong +2 more

The paper reframes LLM reliability from an impossible universal problem to a manageable, local patch-based problem, showing that sufficient interventions can be found by focusing on recurring failure…

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cs.LOcs.AIcs.CCTheoreticalRecentJun 26, 2026

The Undecidability of Artificial General Intelligence (AGI) Alignment

Jose Pascual Gumbau Mezquita

This paper establishes mathematical limits of AGI safety, proving structural unverifiability as the core barrier.

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math.COcs.DMmath.NTTheoreticalRecentJul 8, 2026

Small Matrices with Large Inverses: Unimodular $4 \times 4$ Cases

Steven Finch

This paper investigates the closeness of singularity for $n imes n$ unimodular matrices, specifically for $(2k+1)$-ary and $(k+1)$-ary cases of $4 imes 4$ nonnegative unimodular matrices.

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cs.CCcs.DScs.ITTheoreticalRecentJul 2, 2026

Self-Referential $K$-SAT and the Finite Analogue of Gödel's Incompleteness Theorem

Wen Fang, Xianxian Li, Jun Liu, Jie Luo +2 more

This paper establishes a finite combinatorial version of Gödel's incompleteness theorems in Boolean $K$-SAT, resolving assignment correlations and constructing structurally irreducible SAT/UNSAT pairs…

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q-fin.GNcs.CRRecentApr 30, 2026

The Satoshi Overhang: Why the Bear Case is Bounded

Karl T. Ulrich

The paper analyzes the potential market impact of a large, unknown Bitcoin holder (the Satoshi overhang) and concludes that the mechanical downside risk is bounded, suggesting the terminal states are…

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cs.AIRecentMay 27, 2026

Do Agents Know What They Can't Do? Evaluating Feasibility Awareness in Tool-Using Agents

Liang Cheng, Mingsheng Cai, Jiuming Jiang, Luo Mai

The paper proposes FeasiGen, a method to automatically create infeasible tasks for tool-using agents, and finds that most current agents struggle significantly to detect and stop when faced with such…

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cs.LOcs.CRRecentApr 11, 2026

A Constructive Proof of Rice's Theorem and the Halting Problem via Hilbert's Tenth Problem

Jonathan Brossard

The paper provides a constructive, intuitionistically valid proof of Rice's Theorem and the Halting Problem undecidability by reducing the problem to the undecidability of Hilbert's Tenth Problem (MRD…

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cs.MAmath.DSTheoreticalRecentJul 8, 2026

Stability and Convergence of Optimistic Exponential Weights with Asymmetric Step Sizes in Bimatrix Games

Hédi Hadiji, Sarah Sachs

This paper investigates the convergence and stability of equilibria in bimatrix two-player games using the optimistic exponential weights method, allowing step sizes to differ.

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stat.APcs.CRcs.CYEmpiricalRecentJul 23, 2026

Risk-Limiting Audits for Parliamentary Majorities

Jack Freestone, Dennis Leung, Damjan Vukcevic

This paper proposes a method for auditing parliamentary elections to certify a winning majority instead of individual seats, reducing the number of ballots inspected by almost a thousand-fold.

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cs.GTcs.CCTheoreticalRecentJul 15, 2026

Stable Voting is PSPACE-Complete

Ethan Dickey, Alexandros Psomas, Athina Terzoglou

This paper proves that winner determination under Stable Voting and Simple Stable Voting is PSPACE-complete.

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cs.GTcs.CRcs.CYEmpiricalRecentJul 23, 2026

Advances in STV Margin Computation

Michelle Blom, Alexander Ek, Peter J. Stuckey, Vanessa Teague +1 more

This paper improves an algorithm for computing lower bounds on the margin of a Single Transferable Vote (STV) election, making risk-limiting audits more practical.

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cs.DMmath.NTTheoreticalRecentJul 16, 2026

Conjectural Decidability of the Skolem Problem

Florian Luca, Joël Ouaknine, James Worrell

This paper introduces the concept of 'large' zeros in linear recurrence sequences and establishes that they either do not exist or are very sparse, which could lead to decidability of the Skolem Probl…

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cs.LOcs.CCTheoreticalRecentJun 12, 2026

Algebraic Circuits Over Sum and Shift and Existential Presburger Arithmetic with Divisibility

Ignacio Barros, Michaël Cadilhac, Guillermo A. Pérez

This paper proves that the satisfiability problem of existential Presburger arithmetic extended with divisibility predicates (EPAD) is PP-hard.

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