activity
20232026
most citedBrokenMath: A Benchmark for Sycophancy in Theorem Proving with LLMs

3 citations · 10 across the 18 of their papers we have counts for

collaborators

20 papers

cs.AI2026

ProofCouncil: An LLM Agent for Solving Open Mathematical Problems

Johannes Schmitt, Tim Gehrunger, Jasper Dekoninck +4

Large language models (LLMs) have shown increasing promise in solving open problems in mathematics. However, their performance can be further improved through agentic workflows tai…

cs.CL2026

Not All Proofs Are Equal: Evaluating LLM Proof Quality Beyond Correctness

Ivo Petrov, Jasper Dekoninck, Dimitar I. Dimitrov +1

Large language models (LLMs) have become capable mathematical problem-solvers, often producing correct proofs for challenging problems. However, correctness alone is not sufficient…

cs.CL2026

Optimizing the Cost-Quality Tradeoff of Agentic Theorem Provers in Lean

Kári Rögnvaldsson, Chenhao Sun, Jasper Dekoninck +1

Large language models (LLMs) are increasingly used in workflows for generating formal proofs in Lean. These workflows often decompose problems into smaller lemmas, sample many proo…

cs.CL2026

Learning from Saturated Data: Signals Beyond Correctness for LLM Training

Hanno Hiss, Jasper Dekoninck, Martin Vechev

The growing capabilities of large language models (LLMs) have led to the saturation of many benchmarks and training datasets used to improve them. Motivated by this, we investigate…

cs.CL2026

Beyond Benchmarks: MathArena as an Evaluation Platform for Mathematics with LLMs

Jasper Dekoninck, Nikola Jovanović, Tim Gehrunger +4

Large language models (LLMs) are becoming increasingly capable mathematical collaborators, but static benchmarks are no longer sufficient for evaluating progress: they are often na…

cs.LG2026

Delay, Plateau, or Collapse: Evaluating the Impact of Systematic Verification Error on RLVR

Kazuki Egashira, Mark Vero, Jasper Dekoninck +3

Reinforcement Learning with Verifiable Rewards (RLVR) has become a powerful approach for improving the reasoning capabilities of large language models (LLMs). While RLVR is designe…

cs.AI2026

QED-Nano: Teaching a Tiny Model to Prove Hard Theorems

LM-Provers, Yuxiao Qu, Amrith Setlur +6

Proprietary AI systems have recently demonstrated impressive capabilities on complex proof-based problems, with gold-level performance reported at the 2025 International Mathematic…

cs.AI2025★ 3 cited

BrokenMath: A Benchmark for Sycophancy in Theorem Proving with LLMs

Ivo Petrov, Jasper Dekoninck, Martin Vechev

Large language models (LLMs) have recently shown strong performance on mathematical benchmarks. At the same time, they are prone to hallucination and sycophancy, often providing co…

cs.CY2025

Adaptive Generation of Bias-Eliciting Questions for LLMs

Robin Staab, Jasper Dekoninck, Maximilian Baader +1

Large language models (LLMs) are now widely deployed in user-facing applications, reaching hundreds of millions of users worldwide. Despite their widespread adoption, growing relia…

cs.CL2025

IMProofBench: Benchmarking AI on Research-Level Mathematical Proof Generation

Johannes Schmitt, Gergely Bérczi, Jasper Dekoninck +57

As the mathematical capabilities of large language models (LLMs) improve, it becomes increasingly important to evaluate their performance on research-level tasks at the frontier of…

cs.LG2025

Constrained Decoding of Diffusion LLMs with Context-Free Grammars

Niels Mündler, Jasper Dekoninck, Martin Vechev

Large language models (LLMs) have shown promising performance across diverse domains. Many practical applications of LLMs, such as code completion and structured data extraction, r…

cs.CL2025★ 1 cited

The Open Proof Corpus: A Large-Scale Study of LLM-Generated Mathematical Proofs

Jasper Dekoninck, Ivo Petrov, Kristian Minchev +13

In recent months, large language models (LLMs) have made significant progress in mathematical proof generation, but further advancement is hindered by the lack of a large-scale, hi…

cs.AI2025

MathArena: Evaluating LLMs on Uncontaminated Math Competitions

Mislav Balunović, Jasper Dekoninck, Ivo Petrov +2

The rapid advancement of reasoning capabilities in large language models (LLMs) has led to notable improvements on mathematical benchmarks. However, many of the most commonly used…

cs.CL2025

Proof or Bluff? Evaluating LLMs on 2025 USA Math Olympiad

Ivo Petrov, Jasper Dekoninck, Lyuben Baltadzhiev +5

Recent math benchmarks for large language models (LLMs) such as MathArena indicate that state-of-the-art reasoning models achieve impressive performance on mathematical competition…

cs.AI2025

MathConstruct: Challenging LLM Reasoning with Constructive Proofs

Mislav Balunović, Jasper Dekoninck, Nikola Jovanović +2

While Large Language Models (LLMs) demonstrate impressive performance in mathematics, existing math benchmarks come with significant limitations. Many focus on problems with fixed…

cs.CL2024

A Unified Approach to Routing and Cascading for LLMs

Jasper Dekoninck, Maximilian Baader, Martin Vechev

The availability of a wide range of large language models (LLMs) embedded in various agentic systems has significantly increased the potential of model selection strategies to impr…

cs.CL2024

Polyrating: A Cost-Effective and Bias-Aware Rating System for LLM Evaluation

Jasper Dekoninck, Maximilian Baader, Martin Vechev

Rating-based human evaluation has become an essential tool to accurately evaluate the impressive performance of large language models (LLMs). However, current rating systems suffer…

cs.CL2024★ 3 cited

ConStat: Performance-Based Contamination Detection in Large Language Models

Jasper Dekoninck, Mark Niklas Müller, Martin Vechev

Public benchmarks play an essential role in the evaluation of large language models. However, data contamination can lead to inflated performance, rendering them unreliable for mod…

cs.LG2024★ 3 cited

Evading Data Contamination Detection for Language Models is (too) Easy

Jasper Dekoninck, Mark Niklas Müller, Maximilian Baader +2

Large language models are widespread, with their performance on benchmarks frequently guiding user preferences for one model over another. However, the vast amount of data these mo…

cs.CL2023

Controlled Text Generation via Language Model Arithmetic

Jasper Dekoninck, Marc Fischer, Luca Beurer-Kellner +1

As Large Language Models (LLMs) are deployed more widely, customization with respect to vocabulary, style, and character becomes more important. In this work, we introduce model ar…