Nuprl Lemma : non-void-decl-join

[T:Type]. ∀eq:EqDecider(T). ∀d1,d2:a:T fp-> Type.  (non-void(d1)  non-void(d2)  non-void(d1 ⊕ d2))


Proof




Definitions occuring in Statement :  non-void-decl: non-void(d) fpf-join: f ⊕ g fpf: a:A fp-> B[a] deq: EqDecider(T) uall: [x:A]. B[x] all: x:A. B[x] implies:  Q universe: Type
Lemmas :  fpf-all-join-decl fpf-all_wf assert_wf fpf-dom_wf subtype-fpf2 top_wf subtype_top fpf_wf deq_wf
\mforall{}[T:Type]
    \mforall{}eq:EqDecider(T).  \mforall{}d1,d2:a:T  fp->  Type.    (non-void(d1)  {}\mRightarrow{}  non-void(d2)  {}\mRightarrow{}  non-void(d1  \moplus{}  d2))



Date html generated: 2015_07_17-AM-11_14_07
Last ObjectModification: 2015_01_28-AM-07_40_56

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