ABSURD : IRULEDEF

ABSURD is an intermediate rule definition.
(P1) H !FALSEHOOD
*(P2) H !A(O) Absurd: P1
Transformation: (P2 ss) ==> (P1 ss)

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ABSURD : MEXPR

ABSURD is a top-level command.
Rule of Intuitionistic Absurdity.
The command format for ABSURD is:

 <n>ABSURD   P2   P1    A   P2-HYPS    P1-HYPS 
"LINE" "LINE" "GWFF" "LINELIST" "LINELIST"


The arguments have the following meaning:
P2 : Line to be Proved
P1 : Line with Falsehood
A : Wff to be Proved
P2-HYPS : Hypotheses
P1-HYPS : Hypotheses

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ABSURD : SRULE

ABSURD is an inference rule.
Its priority is NIL

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