Kumar Thushalika

University of Ruhuna, Galle, Sri Lanka

Papers on Lattice

Total citations

Topics

Research focus

Reasoning & Chain-of-Thought (2)Eval Frameworks & Benchmarks (1)Natural Language Processing (1)

Frequent co-authors

Sukumar Kishanthan (2)Asela Hevapathige (2)Buddhi Jayasekara (1)

Papers (2)

Jun 8, 2026

University of RuhunaJun 8, 2026·also Melbourne, University of Moratuwa

Detecting Differences Is Not Understanding Structure: Large Language Models Fail at Graph Isomorphism

LLMs may excel at detecting isomorphism, but they completely miss the mark when node labels are permuted, exposing a critical flaw in their structural reasoning abilities.

Kumar Thushalika, Sukumar Kishanthan, Asela Hevapathige

Reasoning & Chain-of-Thought

Feb 16, 2026

University of MoratuwaFeb 16, 2026·also ANU, Melbourne, Tampere, University of Ruhuna

Beyond Translation: Evaluating Mathematical Reasoning Capabilities of LLMs in Sinhala and Tamil

LLMs that ace math in English stumble badly in Sinhala and Tamil, revealing that multilingual competence doesn't guarantee uniform reasoning across languages.

Sukumar Kishanthan, Kumar Thushalika, Buddhi Jayasekara +1

Eval Frameworks & Benchmarks Natural Language Processing Reasoning & Chain-of-Thought

Kumar Thushalika

Research focus

Frequent co-authors

Papers (2)

Search

Kumar Thushalika

Research focus

Frequent co-authors

Papers (2)