CAM-Bench: A Benchmark for Computational and Applied Mathematics in Lean

Fuente: arXiv
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Auteurs principaux: Long, Wentao, Zhang, Yunfei, Li, Chenyi, Zhou, Li, Sun, Chumin, Wen, Zaiwen
Format: Preprint
Publié: 2026
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author Long, Wentao
Zhang, Yunfei
Li, Chenyi
Zhou, Li
Sun, Chumin
Wen, Zaiwen
author_facet Long, Wentao
Zhang, Yunfei
Li, Chenyi
Zhou, Li
Sun, Chumin
Wen, Zaiwen
contents Formal theorem-proving benchmarks enable mechanically verifiable evaluation of mathematical reasoning in large language models. However, existing benchmarks mainly focus on Olympiad-style problems and algebraic domains, leaving computational and applied mathematics underrepresented. We introduce CAM-Bench, a Lean 4 theorem-proving benchmark of 1,000 Lean proof targets in computational and applied mathematics, with coverage spanning optimization, numerical linear algebra, and numerical analysis. These problems are adapted from textbook exercises and often depend on locally introduced definitions, notation, algorithms, and elementary results. To construct CAM-Bench, we develop a dependency-recovery pipeline that reconstructs the local textbook context needed to state each problem faithfully. It then normalizes each problem into a standalone informal theorem and translates it into a Lean target. We validate the resulting formal problems through Lean compilation and semantic review, checking both formal correctness and semantic alignment with the original exercises. For each problem, we release the raw exercise, recovered context, normalized informal theorem, and final Lean target. CAM-Bench complements existing formal mathematics benchmarks by targeting applied mathematics problems that rely on textbook concepts and elementary theorems, many of which are not directly available as standard Mathlib4 lemmas. We evaluate widely used large language models and formalization agents on CAM-Bench, and analyze common failure modes in tracking local assumptions, applying elementary results, decomposing proofs, and maintaining long-horizon control in Lean.
format Preprint
id arxiv_https___arxiv_org_abs_2605_17255
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle CAM-Bench: A Benchmark for Computational and Applied Mathematics in Lean
Long, Wentao
Zhang, Yunfei
Li, Chenyi
Zhou, Li
Sun, Chumin
Wen, Zaiwen
Artificial Intelligence
Optimization and Control
Formal theorem-proving benchmarks enable mechanically verifiable evaluation of mathematical reasoning in large language models. However, existing benchmarks mainly focus on Olympiad-style problems and algebraic domains, leaving computational and applied mathematics underrepresented. We introduce CAM-Bench, a Lean 4 theorem-proving benchmark of 1,000 Lean proof targets in computational and applied mathematics, with coverage spanning optimization, numerical linear algebra, and numerical analysis. These problems are adapted from textbook exercises and often depend on locally introduced definitions, notation, algorithms, and elementary results. To construct CAM-Bench, we develop a dependency-recovery pipeline that reconstructs the local textbook context needed to state each problem faithfully. It then normalizes each problem into a standalone informal theorem and translates it into a Lean target. We validate the resulting formal problems through Lean compilation and semantic review, checking both formal correctness and semantic alignment with the original exercises. For each problem, we release the raw exercise, recovered context, normalized informal theorem, and final Lean target. CAM-Bench complements existing formal mathematics benchmarks by targeting applied mathematics problems that rely on textbook concepts and elementary theorems, many of which are not directly available as standard Mathlib4 lemmas. We evaluate widely used large language models and formalization agents on CAM-Bench, and analyze common failure modes in tracking local assumptions, applying elementary results, decomposing proofs, and maintaining long-horizon control in Lean.
title CAM-Bench: A Benchmark for Computational and Applied Mathematics in Lean
topic Artificial Intelligence
Optimization and Control
url https://arxiv.org/abs/2605.17255