EQUIV-WFFS : MEXPR

EQUIV-WFFS is a top-level command.
Rule to assert equivalence of lines up to definition.
The command format for EQUIV-WFFS is:

 <n>EQUIV-WFFS   D1   D2    R    P     D1-HYPS    D2-HYPS 
"LINE" "LINE" "GWFF" "GWFF" "LINELIST" "LINELIST"


The arguments have the following meaning:
D1 : Lower Line
D2 : Higher Line
R : Wff of Higher Line
P : Wff of Lower Line
D1-HYPS : Hypotheses
D2-HYPS : Hypotheses

ETPS documentation homepage


EQUIV-WFFS : SRULE

EQUIV-WFFS is an inference rule.
Its priority is NIL

ETPS documentation homepage


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