Nuprl Lemma : null_wf2
null([]) ∈ 𝔹
Proof
Definitions occuring in Statement :
null: null(as),
nil: [],
bool: 𝔹,
member: t ∈ T
Definitions unfolded in proof :
member: t ∈ T
Lemmas referenced :
null_nil_lemma,
btrue_wf
Rules used in proof :
sqequalSubstitution,
sqequalRule,
sqequalReflexivity,
cut,
lemma_by_obid,
hypothesis,
sqequalTransitivity,
computationStep
Latex:
null([]) \mmember{} \mBbbB{}
Date html generated:
2016_05_14-AM-06_30_32
Last ObjectModification:
2015_12_26-PM-00_39_23
Theory : list_0
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