SYM= : %THEOREM%

SYM= is a theorem.
Book Theorem:
A(A) = B(A) IMPLIES B = A
Symmetry of Equality.

TPS documentation homepage


SYM= : IRULEDEF

SYM= is an intermediate rule definition.
(P1) H !A(A) = B(A)
*(P2) H !B(A) = A(A) Sym=: P1
Transformation: (P2 ss) ==> (P1 ss)

TPS documentation homepage


SYM= : MEXPR

SYM= is a top-level command.
Rule of Symmetry of Equality.
The command format for SYM= is:

 <n>SYM=   P2   P1    A    B     P2-HYPS    P1-HYPS 
"LINE" "LINE" "GWFF" "GWFF" "LINELIST" "LINELIST"


The arguments have the following meaning:
P2 : Higher Line
P1 : Lower Line
A : Left Hand Side of Lower Equality
B : Right Hand Side of Lower Equality
P2-HYPS : Hypotheses
P1-HYPS : Hypotheses

TPS documentation homepage


SYM= : SRULE

SYM= is an inference rule.
Its priority is NIL

TPS documentation homepage


© 1988-99, Carnegie Mellon University.

TPS homepage