Nuprl Lemma : DVp_Null?_wf
∀[v:C_DVALUEp()]. (DVp_Null?(v) ∈ 𝔹)
Proof
Definitions occuring in Statement :
DVp_Null?: DVp_Null?(v),
C_DVALUEp: C_DVALUEp(),
bool: 𝔹,
uall: ∀[x:A]. B[x],
member: t ∈ T
Lemmas :
C_DVALUEp-ext,
eq_atom_wf,
bool_wf,
eqtt_to_assert,
assert_of_eq_atom,
subtype_base_sq,
atom_subtype_base,
unit_wf2,
unit_subtype_base,
it_wf,
btrue_wf,
eqff_to_assert,
equal_wf,
bool_cases_sqequal,
bool_subtype_base,
assert-bnot,
neg_assert_of_eq_atom,
bfalse_wf,
C_DVALUEp_wf
\mforall{}[v:C\_DVALUEp()]. (DVp\_Null?(v) \mmember{} \mBbbB{})
Date html generated:
2015_07_17-AM-07_44_22
Last ObjectModification:
2015_01_27-AM-09_45_50
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