GraphOmni: A Comprehensive and Extensible Benchmark Framework for Large Language Models on Graph-theoretic Tasks - Xu, Hao; Jian, Xiangru; Zhao, Xinjian; Pang, Wei; Zhang, Chao; Wang, Suyuchen; ZHANG, Qixin; Dong, Zhengyuan; Monteiro, Joao; Liu, Bang; Sun, Qiuzhuang; Yu, Tianshu (International Conference on Learning Representations, 2026)