helm/software/matita/contribs/character/classes/defs.ma

   1 (**************************************************************************)
   2 (*       ___                                                              *)
   3 (*      ||M||                                                             *)
   4 (*      ||A||       A project by Andrea Asperti                           *)
   5 (*      ||T||                                                             *)
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  11 (*        v         GNU General Public License Version 2                  *)
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  13 (**************************************************************************)
  14
  15 include "preamble.ma".
  16
  17 inductive P: nat \to Prop \def
  18    | p1: P 1
  19    | p2: \forall i,j. T i \to P j \to P (i + j)
  20 with T: nat \to Prop \def
  21    | t1: \forall i. P i \to T (i * 3)
  22    | t2: \forall i. T i \to T (i * 3)
  23 .