Toshiyasu Arai. Wellfoundedness proof with the maximal distinguished set. Archive for Mathematical Logic. 2023. 62. 3-4. 333-357
Toshiyasu Arai, Stanley S. Wainer, Andreas Weiermann. Goodstein sequences based on a Parametrized Ackermann-Péter function. The Bulletin of Symbolic Logic. 2021. 27. 2. 168-186
Toshiyasu Arai. Cut-elimination for SBL. The Legacy of Kurt Sch\"utte, ed. by R. Kahle and M. Rathjen, Springer. 2020. 265-298
Toshiyasu Arai, David Fernández-Duque, Stanley Wainer, Andreas Weiermann. Predicatively unprovable termination of the Ackermannian Goodstein process. Proc. Amer. Math. Soc. 2020. 148. 3567-3582
Toshiyasu Arai. A Simplified Ordinal Analysis of First-order Reflection. The Journal of Symbolic Logic. 2020. 85. 3. 1163-1185
Proceedings of the 11th Asian Logic Conference : in honor of Professor Chong Chitat on his 60th birthday, National University of Singapore, Singapore, 22-27 June 2009
World Scientific 2012 ISBN:9789814360531