Nuprl Lemma : hd-es-interval

[es:EO]. ∀[e,e':E].  hd([e, e']) e ∈ supposing e ≤loc e' 


Proof




Definitions occuring in Statement :  es-interval: [e, e'] es-le: e ≤loc e'  es-E: E event_ordering: EO hd: hd(l) uimplies: supposing a uall: [x:A]. B[x] equal: t ∈ T
Lemmas :  es-le_wf es-E_wf event_ordering_wf es-le-self member-es-interval decidable__equal_int subtype_base_sq int_subtype_base le-add-cancel2 add_functionality_wrt_le le_antisymmetry_iff add-commutes zero-add add-associates add-swap minus-one-mul minus-add condition-implies-le less-iff-le not-ge-2 false_wf length_wf decidable__le es-interval_wf hd_wf select0 minus-zero le-add-cancel add-zero not-equal-2 decidable__lt less_than_transitivity2 lelt_wf l_before_select list_wf list-cases length_of_nil_lemma stuck-spread base_wf less_than_transitivity1 less_than_irreflexivity less_than_wf product_subtype_list length_of_cons_lemma reduce_hd_cons_lemma es-locl_irreflexivity es-le_weakening_eq select_wf es-locl_transitivity2 sq_stable__le l_before-es-interval
\mforall{}[es:EO].  \mforall{}[e,e':E].    hd([e,  e'])  =  e  supposing  e  \mleq{}loc  e' 



Date html generated: 2015_07_17-AM-08_41_48
Last ObjectModification: 2015_02_02-PM-06_39_28

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