(3steps total) PrintForm Definitions Lemmas num thy 1 Sections StandardLIB Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: neg assoced 2

1. a : 
  a | -a


By: (RWH (RevLemmaC Thm* a,b:a | b  a | -b) 0)
THEN
(BackThru Thm* a:a | a)


Generated subgoals:

None

About:
intminusall
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

(3steps total) PrintForm Definitions Lemmas num thy 1 Sections StandardLIB Doc