diff options
author | Pierre Courtieu <courtieu@lri.fr> | 2004-04-16 11:32:42 +0000 |
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committer | Pierre Courtieu <courtieu@lri.fr> | 2004-04-16 11:32:42 +0000 |
commit | 801e65f796b46caff7e1248db442102e0f943f44 (patch) | |
tree | 0a82e0c9a17284823367b7fd7b4e548d52be5ac7 /coq | |
parent | 254a9c79fce52f1326895848a7f8bb3cd1b3663f (diff) |
added an example fils for coq x-symbols.
Diffstat (limited to 'coq')
-rw-r--r-- | coq/example-x-symbols.v | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/coq/example-x-symbols.v b/coq/example-x-symbols.v new file mode 100644 index 00000000..c3bee71e --- /dev/null +++ b/coq/example-x-symbols.v @@ -0,0 +1,37 @@ +(* Grammar for symbols: + a symbol is encoded only if + - preceded by _ or some space or some symbol + **and** + - followed by _ or some space or some symbol + + Grammar for sub/superscript: + + - a double _ introduces a subscript that ends at the first space + - a double ^ introduces a superscript that ends at the first space + + - a _ followed by { introduces a subscript + expression that ends at the first } + - a ^ followed by { introduces a superscript + expression that ends at the first } + *) + + + +foo_alpha_1_beta_3 (* this should appear like foo_a_1_B_3 where a and B are greek *) +delta__1 delta^^1 (* greek delta with a sub 1 and the same with super 1 *) +x_{a+b} x^{a+b} (* x with a+b subscripted and then superscripted *) +philosophi (* no greek letter should appear on this line *) +aalpha alphaa (* no greek letter *) +_alpha (* _a where a is greek *) +alpha_ (* a_ where a is greek *) + + + +Fixpoint toto (x:nat) {struct x} : nat := (* nat should appear as |N *) + match x with + | O => O (* double arrow here *) + | S y => toto y (* double arrow here *) + end. + +Lemma titi : forall x:nat,x=x. (* symbolique for-all and nat *) +
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