中国科学院数学与系统科学研究院期刊网
AMS
Forward Expansiveness and Entropies for Subsystems of $\bm{\mathbb{Z}_+^k}$-actions
Yao Jia GUO, Xin Sheng WANG, Yu Jun ZHU
Acta Mathematica Sinica . 2023, (4): 633 -662 .  DOI: 10.1007/s10114-022-1112-8