Nuprl Lemma : tagged-test_wf
∀[T:Type]. ∀[x:"b":𝔹 |+ "a":ℤ].  (tagged-test(x) ∈ "b":𝔹 |+ "a":ℤ)
Proof
Definitions occuring in Statement : 
tagged-test: tagged-test(x), 
tagged+: T |+ z:B, 
bool: 𝔹, 
uall: ∀[x:A]. B[x], 
top: Top, 
member: t ∈ T, 
int: ℤ, 
token: "$token", 
universe: Type
Definitions unfolded in proof : 
uall: ∀[x:A]. B[x], 
member: t ∈ T, 
tagged-test: tagged-test(x), 
all: ∀x:A. B[x], 
implies: P ⇒ Q, 
bool: 𝔹, 
unit: Unit, 
it: ⋅, 
btrue: tt, 
uiff: uiff(P;Q), 
and: P ∧ Q, 
uimplies: b supposing a, 
ifthenelse: if b then t else f fi , 
tagged+: T |+ z:B, 
isect2: T1 ⋂ T2, 
top: Top, 
bfalse: ff, 
rev_uimplies: rev_uimplies(P;Q), 
eq_atom: x =a y, 
assert: ↑b, 
true: True, 
bnot: ¬bb, 
iff: P ⇐⇒ Q, 
not: ¬A, 
prop: ℙ, 
rev_implies: P ⇐ Q, 
subtype_rel: A ⊆r B
Lemmas referenced : 
eq_atom_wf, 
tagged-tag_wf2, 
tagged+_wf, 
top_wf, 
bool_wf, 
uiff_transitivity, 
equal-wf-T-base, 
assert_wf, 
eqtt_to_assert, 
assert_of_eq_atom, 
mk-tagged_wf_unequal, 
iff_transitivity, 
not_wf, 
equal-wf-base, 
false_wf, 
true_wf, 
iff_weakening_uiff, 
assert_of_bnot, 
bfalse_wf, 
mk-tagged_wf, 
assert_of_eq_int, 
tagged-val_wf2, 
isect2_subtype_rel2, 
tag-case_wf, 
bnot_wf, 
eqff_to_assert, 
equal_wf
Rules used in proof : 
sqequalSubstitution, 
sqequalTransitivity, 
computationStep, 
sqequalReflexivity, 
isect_memberFormation, 
introduction, 
cut, 
sqequalRule, 
extract_by_obid, 
sqequalHypSubstitution, 
isectElimination, 
thin, 
hypothesis, 
tokenEquality, 
intEquality, 
hypothesisEquality, 
because_Cache, 
lambdaFormation, 
unionElimination, 
equalityElimination, 
equalityTransitivity, 
equalitySymmetry, 
baseClosed, 
atomEquality, 
independent_functionElimination, 
productElimination, 
independent_isectElimination, 
isect_memberEquality, 
independent_pairFormation, 
natural_numberEquality, 
impliesFunctionality, 
voidElimination, 
voidEquality, 
addEquality, 
applyEquality, 
dependent_functionElimination, 
axiomEquality, 
universeEquality
Latex:
\mforall{}[T:Type].  \mforall{}[x:"b":\mBbbB{}  |+  "a":\mBbbZ{}].    (tagged-test(x)  \mmember{}  "b":\mBbbB{}  |+  "a":\mBbbZ{})
Date html generated:
2018_05_21-PM-08_43_07
Last ObjectModification:
2017_07_26-PM-06_07_02
Theory : general
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