Definitions fun 1 Sections StandardLIB Doc
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Some definitions of interest.
composeDef (f o g)(x) == f(g(x))
Thm* A,B,C:Type, f:(BC), g:(AB). f o g  AC
tidentityDef Id == Id
Thm* A:Type. Id  AA
identityDef Id(x) == x
Thm* A:Type. Id  AA

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applyfunctionuniversememberall!abstraction
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

Definitions fun 1 Sections StandardLIB Doc