The fixed point and the Craig interpolation properties for sublogics of
\(\mathbf{IL}\)
Sohei Iwata, Taishi Kurahashi and Yuya Okawa, 投稿中. ResearchGate arXiv:2007.05427
Rosser provability and the second incompleteness theorem Taishi Kurahashi,Symposium on Advances in Mathematical Logic 2018 proceedings, 受理.
ResearchGate arXiv:1902.06863