Definitions mb list 1 Sections MarkB generic Doc
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Some definitions of interest.
listpDef A List == {l:(A List)| (0<||l||) }
Thm* A:Type. A List  Type
assertDef b == if b True else False fi
Thm* b:b  Prop
geDef ij == ji
Thm* i,j:. (ij Prop
lengthDef ||as|| == Case of as; nil  0 ; a.as'  ||as'||+1  (recursive)
Thm* A:Type, l:A List. ||l||  
Thm* ||nil||  
lt_intDef i<j == if i<j true ; false fi
Thm* i,j:. (i<j 

About:
listnillist_indboolbfalsebtrue
ifthenelseassertintnatural_numberaddlessset
recursive_def_noticeuniversememberpropfalsetrueall!abstraction
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

Definitions mb list 1 Sections MarkB generic Doc