hol arithmetic 1 Sections HOLlib Doc
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Def (x:Tb(x))(x) == b(x)

is mentioned by

Def div == m:n:. ndiv(m;n)[hdiv]
Def mod == m:n:. nmod(m;n)[hmod]
Def odd == n:. odd(n)[hodd]
Def even == n:. even(n)[heven]
Def fact == n:. fact(n)[hfact]
Def ge == m:n:nm[hge]
Def le == m:n:mn[hle]
Def gt == m:n:n<m[hgt]
Def exp == m:n:. exp(m;n)[hexp]
Def mult == m:n:mn[hmult]
Def sub == m:n:. nnsub(m;n)[hsub]
Def add == m:n:m+n[hadd]

In prior sections: hol hol bool hol min

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

hol arithmetic 1 Sections HOLlib Doc