Entry
Value
Name
real_abs
Conclusion
!x. abs x = (if &0 <= x then x else --x)
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))
(==>) = (\p q. p /\ q <=> p)
(!) = (\p. p = (\x. T))
Contained Package
real-def
Comment
Standard HOL library retrieved from OpenTheory
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