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20 results for “semi-perimeter”

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cs.DMEmpiricalRecentJun 11, 2026

k-Convex Polyominoes by Semi-perimeter

Andrew R. Conway, Anthony J. Guttmann

The paper provides the conjectured solution for the generating function of k-convex polyominoes, based on analysis of generated enumeration data.

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cs.LGcs.AIcs.CRRecentApr 8, 2026

When Safety Geometry Collapses: Fine-Tuning Vulnerabilities in Agentic Guard Models

Ismail Hossain, Sai Puppala, Jannatul Ferdaus, Md Jahangir Alam +3 more

The paper demonstrates that fine-tuning safety guard models on benign data can catastrophically collapse their safety alignment, proposing Fisher-Weighted Safety Subspace Regularization (FW-SSR) to ac…

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cs.CRRecentApr 5, 2026

Context-Binding Gaps in Stateful Zero-Knowledge Proximity Proofs: Taxonomy, Separation, and Mitigation

Yoshiyuki Ootani

The paper addresses the vulnerability of zero-knowledge proximity proofs in stateful systems by proposing Zairn-ZKP, a method that embeds operational context (like drop identity and policy version) di…

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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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cs.CRcs.AIcs.PLRecentMay 1, 2026

Semia: Auditing Agent Skills via Constraint-Guided Representation Synthesis

Hongbo Wen, Ying Li, Hanzhi Liu, Chaofan Shou +3 more

Semia is a novel static auditor that translates complex, prose-defined agent skills into a verifiable Datalog fact base, enabling the detection of critical security vulnerabilities in real-world LLM a…

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cs.CRcs.SERecentMar 20, 2026

Byte-level Object Bounds Protection

Piyus Kedia

PRISM is a novel, precise object-bounds protection scheme that significantly reduces runtime overhead by encoding the object's end address directly into the pointer tag, thereby eliminating costly met…

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cs.CVcs.CRcs.LGRecentMay 29, 2026

Latent Geometric Chords for Query-Efficient Decision-Based Adversarial Attacks

Ei Hmue Khine, Yao Li, Jiebao Sun, Shengzhu Shi +2 more

The paper proposes Latent Geometric Chords (LGC) and LGC-H, a novel method that navigates decision boundaries using curvature-aware geometric search within a semantic manifold to generate high-fidelit…

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cs.CGRecentMay 29, 2026

How Many Slopes Does Polynomial Area Cost?

Michael A. Bekos, Eleni Katsanou, Philipp Kindermann, Maria Eleni Pavlidi

The paper systematically studies the trade-offs between the number of slopes, bends per edge, and required area for planar drawings of bounded-degree graphs, providing new constructions for high-degre…

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cs.DMTheoreticalRecentJun 11, 2026

Snake Polyominoes of Maximal Area in a Rectangle

Alexandre Blondin Massé, Alain Goupil

This paper presents an algorithm to generate snake-like polyominoes within a given rectangle and provides exact formulas for the maximal area of such polyominoes for certain dimensions.

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cs.CRRecentMar 17, 2026

Ciphertext-Policy ABE for $\mathsf{NC}^1$ Circuits with Constant-Size Ciphertexts from Succinct LWE

Jiaqi Liu, Yuanyi Zhang, Fang-Wei Fu

The paper presents a lattice-based Ciphertext-Policy Attribute-Based Encryption (CP-ABE) scheme that supports $\mathsf{NC}^1$ access policies while maintaining constant-size ciphertexts.

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cs.AIRecentMay 29, 2026

Geodesic Flow Matching for Denoising High-Dimensional Structured Representations

Karim Habashy, Chris Eliasmith

The paper introduces Geodesic Flow Matching, a manifold-aware denoising technique that adapts Riemannian transport dynamics to accurately clean high-dimensional structured representations like Spatial…

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cs.CRquant-phRecentApr 17, 2026

Module Lattice Security (Part I): Unconditional Verification of Weber's Conjecture for $k \le 12$

Ming-Xing Luo

This paper provides the first unconditional proof for Weber's Conjecture for the case $k ext{ up to } 12$, which is crucial for lattice-based cryptography.

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cs.CLRecentMay 29, 2026

ConsisGuard: Aligning Safety Deliberation with Policy Enforcement in LLM Guardrails

Yan Wang, Zhixuan Chu, Zihao Xue, Zhen Bi +8 more

The paper introduces ConsisGuard, a framework that addresses the 'deliberation-to-enforcement gap' in LLM guardrails by ensuring that the reasoning process is faithfully and consistently translated in…

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cs.CRcs.AIRecentMay 17, 2026

LPG: Balancing Efficiency and Policy Reasoning in Latent Policy Guardrails

Nanxi Li, Zhengyue Zhao, Chaowei Xiao

The paper introduces Latent Policy Guardrail (LPG), a novel framework that efficiently enforces dynamic safety policies for LLMs by compressing complex policy deliberation into a small set of latent t…

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cs.CRcs.LOcs.PLRecentJun 1, 2026

Tridirectional Discriminating-Power Formal Verification of Smart Contract Reentrancy Defense Against Production-Deployed Solidity Source

Ray Iskander

The paper provides the first machine-checked, tridirectional correctness proof of the OpenZeppelin reentrancy-guard pattern against complex, production-deployed Solidity smart contract source.

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cs.AIcs.CRRecentMar 24, 2026

AgentWall: A Runtime Safety Layer for Local AI Agents

Ashwin Aravind

AgentWall is a runtime safety layer that intercepts and evaluates all proposed actions from local AI agents against a declarative policy, ensuring safety before execution.

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cs.DMTheoreticalRecentJun 11, 2026

Fibonacci and Catalan Numbers Meet in Staircase Polyominoes

Jean-Luc Baril, José Luis Ramírez, Samuel Ramírez, Diego Villamizar

This paper derives multivariate generating functions to refine the enumeration of Fibonacci polyominoes.

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cs.CRRecentApr 17, 2026

Half-Moon Cookie: Private, Similarity-Based Blocklisting with TOCTOU-Attack Resilience

Xinyuan Zhang, Anrin Chakraborti, Michael K. Reiter

Half-Moon Cookie introduces a private, similarity-based blocklisting framework that allows clients to check items against a proprietary blocklist without revealing the item or the blocklist contents,…

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cs.CLcs.CRRecentMay 1, 2026

ML-Bench&Guard: Policy-Grounded Multilingual Safety Benchmark and Guardrail for Large Language Models

Yunhan Zhao, Zhaorun Chen, Xingjun Ma, Yu-Gang Jiang +1 more

The paper introduces ML-Bench, a policy-grounded multilingual safety benchmark, and ML-Guard, a superior guardrail model that enables culturally and legally aligned safety assessment for LLMs across 1…

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cs.CLcs.CRRecentMay 8, 2026

GLiGuard: Schema-Conditioned Classification for LLM Safeguard

Urchade Zaratiana, Mary Newhauser, George Hurn-Maloney, Ash Lewis

GLiGuard introduces a compact, schema-conditioned bidirectional encoder that achieves state-of-the-art performance in LLM content moderation across multiple safety dimensions while drastically reducin…

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