Author

Luke Ong

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Preprint Aug 2026

FaithformBench: Benchmarking Faithfulness of Mathematical Chain-of-Thought Autoformalisation

A new benchmark for AF faithfulness is proposed that is cheap to apply, sound under weak assumptions, and assesses both positive and negative examples, and measuring validity preservation on unperturbed steps and invalidity preservation on perturbed steps is applied.

Rob Cornish, Iacopo Ghinassi, Po-Hung Yeh et al. · 1 citation

Jul 2026

AoA: Theorem Proving Agent over Abstract Syntax Tree of Redesigned Language

AoA lifts the agent off source text and onto the abstract syntax tree (AST): the model supplies proofs as JSON representations of Minilang's AST and drives the prover through a tree-edit model that fuses proof operations and states into one proof tree, so each operation carries its own subgoal's state, readable directl...

Qiyuan Xu, Joshua Ong Jun Leang, Renxi Wang et al. · arXiv.org · 0 citations