diff options
author | herbelin <herbelin@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2010-12-04 15:06:09 +0000 |
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committer | herbelin <herbelin@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2010-12-04 15:06:09 +0000 |
commit | 29e2598a14016dc4b4373605b04418959362fc53 (patch) | |
tree | b78ec654c879ebdc71ebfaf4c03f7ea78beacdc9 /doc/faq/FAQ.tex | |
parent | 2b6ce061e6c9170bdaf74633edc8323512f1d456 (diff) |
Applied patch to FAQ proposed by Hendrik Tews (bug report #2446).
It is in section "My goal is ..., how can I prove it?" of the FAQ.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13681 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'doc/faq/FAQ.tex')
-rw-r--r-- | doc/faq/FAQ.tex | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/doc/faq/FAQ.tex b/doc/faq/FAQ.tex index 0e5b00d37..080450745 100644 --- a/doc/faq/FAQ.tex +++ b/doc/faq/FAQ.tex @@ -96,6 +96,7 @@ \def\symmetryin{{\tt symmetryin}} \def\instantiate{{\tt instantiate}} \def\inversion{{\tt inversion}} +\def\specialize{{\tt specialize}} \def\Defined{{\tt Defined}} \def\Qed{{\tt Qed}} \def\pattern{{\tt pattern}} @@ -867,6 +868,16 @@ provide names for these variables: {\Coq} will do it anyway, but such automatic naming decreases legibility and robustness. +\Question{My goal contains an universally quantified statement, how can I use it?} + +If the universally quantified assumption matches the goal you can +use the {\apply} tactic. If it is an equation you can use the +{\rewrite} tactic. Otherwise you can use the {\specialize} tactic +to instantiate the quantified variables with terms. The variant +{\tt assert(Ht := H t)} makes a copy of assumption {\tt H} before +instantiating it. + + \Question{My goal is an existential, how can I prove it?} Use some theorem or assumption or exhibit the witness using the {\existstac} tactic. |