On 2014-02-06 16:17, Sergei Meshveliani wrote: > People, > > I searched for isYes, isYes?, yes? in lib-0.7, > and have discovered > ⌊_⌋ in module Relation.Nullary.Decidable. > > I wonder what is the origin of this denotation. Brackets of this kind are sometimes used to denote various forms of erasure. -- /NAD