commit by user

[helm.git] / weblib / tutorial / chapter2.ma

diff --git a/weblib/tutorial/chapter2.ma b/weblib/tutorial/chapter2.ma
index 7260a33aff9d5ef96b975289df80d1dbe2c675f8..2942d61524b941cc00daa7c6e59adb49bf974416 100644 (file)
--- a/weblib/tutorial/chapter2.ma
+++ b/weblib/tutorial/chapter2.ma
@@ -1,4 +1,6 @@
+(*
 \ 5h1 class="section"\ 6Induction and Recursion\ 5/h1\ 6
+*)
 include "basics/types.ma".
 
 (* Most of the types we have seen so far are enumerated types, composed by a 
@@ -231,7 +233,8 @@ lemma div2_ok: ∀n,q,r. \ 5a href="cic:/matita/tutorial/chapter2/div2.fix(0,0,2)"
     ]
 qed.
 
-(* \ 5h2 class="section"\ 6Mixing proofs and computations\ 5/h2\ 6
+(* 
+\ 5h2 class="section"\ 6Mixing proofs and computations\ 5/h2\ 6
 There is still another possibility, however, namely to mix the program and its 
 specification into a single entity. The idea is to refine the output type of the 
 div2 function: it should not be just a generic pair 〈q,r〉 of natural numbers but a 
@@ -281,4 +284,4 @@ example quotient7: \ 5a href="cic:/matita/tutorial/chapter2/witness.fix(0,2,1)"\ 6wi
 example quotient8: \ 5a href="cic:/matita/tutorial/chapter2/witness.fix(0,2,1)"\ 6witness\ 5/a\ 6 … (\ 5a href="cic:/matita/tutorial/chapter2/div2Pagain.def(4)"\ 6div2Pagain\ 5/a\ 6 (\ 5a href="cic:/matita/tutorial/chapter2/twice.def(2)"\ 6twice\ 5/a\ 6 (\ 5a href="cic:/matita/tutorial/chapter2/twice.def(2)"\ 6twice\ 5/a\ 6 (\ 5a href="cic:/matita/tutorial/chapter2/twice.def(2)"\ 6twice\ 5/a\ 6 (\ 5a href="cic:/matita/tutorial/chapter2/twice.def(2)"\ 6twice\ 5/a\ 6 (\ 5a href="cic:/matita/tutorial/chapter2/nat.con(0,2,0)"\ 6S\ 5/a\ 6 \ 5a href="cic:/matita/tutorial/chapter2/nat.con(0,1,0)"\ 6O\ 5/a\ 6)))))) 
        \ 5a title="leibnitz's equality" href="cic:/fakeuri.def(1)"\ 6=\ 5/a\ 6 \ 5a title="Pair construction" href="cic:/fakeuri.def(1)"\ 6〈\ 5/a\ 6\ 5a href="cic:/matita/tutorial/chapter2/twice.def(2)"\ 6twice\ 5/a\ 6 (\ 5a href="cic:/matita/tutorial/chapter2/twice.def(2)"\ 6twice\ 5/a\ 6 (\ 5a href="cic:/matita/tutorial/chapter2/twice.def(2)"\ 6twice\ 5/a\ 6 (\ 5a href="cic:/matita/tutorial/chapter2/nat.con(0,2,0)"\ 6S\ 5/a\ 6 \ 5a href="cic:/matita/tutorial/chapter2/nat.con(0,1,0)"\ 6O\ 5/a\ 6))), \ 5a href="cic:/matita/tutorial/chapter2/bool.con(0,2,0)"\ 6ff\ 5/a\ 6〉.
 // qed. 
-\ 5pre\ 6\ 5pre\ 6 \ 5/pre\ 6\ 5/pre\ 6
\ No newline at end of file
+\ 5pre\ 6\ 5pre\ 6 \ 5/pre\ 6\ 5/pre\ 6