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At: decls mng singleton 1

1. d: dec()
2. rho: Decl
3. s: l:Labeldecl_type([[d]] rho;l)
4. x1: Label

decl_type([[d]] rho;x1) (d:{d@0:dec()| d@0 < d > }. decl_type([[d]] rho;x1))

By: Unfold `subtype` 0

Generated subgoal:

15. x: decl_type([[d]] rho;x1)
6. d1: {d@0:dec()| d@0 < d > }
x decl_type([[d1]] rho;x1)


About:
setisectfunctionmembersubtype

(13steps) PrintForm Definitions mb automata 3 Sections GenAutomata Doc