Def  == Unit+Unit

is mentioned by

Thm* n:. n>0  odd(n) = odd(n-1)	[odd_pos]
Thm* odd(0) = false	[odd_zero]
Thm* n:. odd(n)	[odd_wf]
Thm* n:. n>0  even(n) = even(n-1)	[even_pos]
Thm* even(0) = true	[even_zero]
Thm* n:. even(n)	[even_wf]

In prior sections: bool 1 hol hol bool hol min

Try larger context: HOLlib IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html