Nuprl Lemma : empty_bag_append_lemma
∀b:Top. ({} + b ~ b)
Proof
Definitions occuring in Statement :
bag-append: as + bs,
empty-bag: {},
top: Top,
all: ∀x:A. B[x],
sqequal: s ~ t
Definitions unfolded in proof :
all: ∀x:A. B[x],
member: t ∈ T,
empty-bag: {},
bag-append: as + bs,
append: as @ bs,
so_lambda: so_lambda(x,y,z.t[x; y; z]),
top: Top,
so_apply: x[s1;s2;s3]
Lemmas referenced :
top_wf,
list_ind_nil_lemma
Rules used in proof :
sqequalSubstitution,
sqequalTransitivity,
computationStep,
sqequalReflexivity,
lambdaFormation,
cut,
hypothesis,
lemma_by_obid,
sqequalRule,
sqequalHypSubstitution,
dependent_functionElimination,
thin,
isect_memberEquality,
voidElimination,
voidEquality
Latex:
\mforall{}b:Top. (\{\} + b \msim{} b)
Date html generated:
2016_05_15-PM-02_22_23
Last ObjectModification:
2015_12_27-AM-09_54_52
Theory : bags
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