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Summary of the formal first-order (intuitionistic) natural deduction system

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• (del) (cur) 10:57, 5 September 2004 . . en:User:Kaustuv Kaustuv ( en:User_talk:Kaustuv Talk) . . 685x873 (34620 bytes) (minor correction in ∃I rule)
• (del) (rev) 00:41, 25 August 2004 . . en:User:Kaustuv Kaustuv ( en:User_talk:Kaustuv Talk) . . 685x873 (28217 bytes) (Summary of the formal first-order (intuitionistic) natural deduction system { { GFDL } })