Entry Value
Name map_option_none
Conclusion !f. map_option f NONE = NONE
Constructive Proof Yes
Axiom
N|A
Classical Lemmas N|A
Constructive Lemmas
  • T
  • T <=> (\p. p) = (\p. p)
  • (/\) = (\p q. (\f. f p q) = (\f. f T T))
  • Contained Package option-map-def
    Comment Standard HOL library retrieved from OpenTheory
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