| Some definitions of interest. |
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nat_plus | Def == {i:| 0<i } |
| | Thm* Type |
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sfa_doc_sexpr | Def Sexpr(A) == rec(T.(TT)+A) |
| | Thm* A:Type. Sexpr(A) Type |
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sfa_doc_sexpr_size | Def Size(s) == Case of s : Inj(x) 1 ; Cons(s1;s2) Size(s1)+Size(s2)
Def (recursive) |
| | Thm* A:Type, s:Sexpr(A). Size(s) |