An inside view of EXP, or the closed fragment of the provability logic of I→DN⇋ 0 →O⇋ with a propositional constant for EXP / Albert Visser

An inside view of EXP, or the closed fragment of the provability logic of I→DN⇋ 0 →O⇋ with a propositional constant for EXP / Albert Visser