Leonardo de Moura 7b15e558a2 refactor(kernel/converter): implement eta in whnf instead of is_def_eq. ... Without cumulativity, we do not have problems with Eta at whnf anymore. When we had cumulativity, we could not not simply reduce (fun x : A, f x) ==> f This step is correct only if domain(f) was definitionally equal to f. Here is a problematic example for systems with cumulativity Given, f : Type.{2} -> Bool (fun x : Type.{1}, f x) Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>		2014-05-12 17:49:53 -07:00
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lean	refactor(builtin/kernel): use standard definition for 'or' and 'and'	2014-02-17 12:05:34 -08:00
lua	refactor(kernel/converter): implement eta in whnf instead of is_def_eq.	2014-05-12 17:49:53 -07:00