Nuprl Lemma : weak-xmiddle_wf
WeakXM ∈ ℙ'
Proof
Definitions occuring in Statement : 
weak-xmiddle: WeakXM
, 
prop: ℙ
, 
member: t ∈ T
Definitions unfolded in proof : 
weak-xmiddle: WeakXM
, 
member: t ∈ T
, 
uall: ∀[x:A]. B[x]
, 
prop: ℙ
, 
so_lambda: λ2x.t[x]
, 
so_apply: x[s]
Lemmas referenced : 
decidable_wf, 
squash_wf, 
all_wf
Rules used in proof : 
sqequalSubstitution, 
sqequalRule, 
sqequalReflexivity, 
sqequalTransitivity, 
computationStep, 
cut, 
instantiate, 
lemma_by_obid, 
sqequalHypSubstitution, 
isectElimination, 
thin, 
universeEquality, 
lambdaEquality, 
cumulativity, 
hypothesisEquality, 
hypothesis
Latex:
WeakXM  \mmember{}  \mBbbP{}'
Date html generated:
2016_05_13-PM-03_10_20
Last ObjectModification:
2016_01_06-PM-05_26_26
Theory : core_2
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