Nuprl Lemma : extend-name-morph_wf
∀[I,J:Cname List]. ∀[f:name-morph(I;J)]. ∀[z1,z2:Cname]. f[z1:=z2] ∈ name-morph([z1 / I];[z2 / J]) supposing ¬(z2 ∈ J)
Proof
Definitions occuring in Statement :
extend-name-morph: f[z1:=z2],
name-morph: name-morph(I;J),
coordinate_name: Cname,
l_member: (x ∈ l),
cons: [a / b],
list: T List,
uimplies: b supposing a,
uall: ∀[x:A]. B[x],
not: ¬A,
member: t ∈ T
Definitions unfolded in proof :
uall: ∀[x:A]. B[x],
member: t ∈ T,
uimplies: b supposing a,
extend-name-morph: f[z1:=z2],
name-morph: name-morph(I;J),
not: ¬A,
implies: P ⇒ Q,
prop: ℙ,
false: False,
iff: P ⇐⇒ Q,
so_apply: x[s],
so_lambda: λ2x.t[x],
int_upper: {i...},
coordinate_name: Cname,
rev_implies: P ⇐ Q,
assert: ↑b,
bnot: ¬bb,
guard: {T},
sq_type: SQType(T),
or: P ∨ Q,
subtype_rel: A ⊆r B,
exists: ∃x:A. B[x],
bfalse: ff,
and: P ∧ Q,
uiff: uiff(P;Q),
ifthenelse: if b then t else f fi ,
btrue: tt,
it: ⋅,
unit: Unit,
bool: 𝔹,
all: ∀x:A. B[x],
nameset: nameset(L),
isname: isname(z),
true: True,
l_member: (x ∈ l),
nat: ℕ,
le: A ≤ B,
less_than': less_than'(a;b),
top: Top,
select: L[n],
cons: [a / b],
cand: A c∧ B,
nat_plus: ℕ+,
squash: ↓T,
decidable: Dec(P),
satisfiable_int_formula: satisfiable_int_formula(fmla),
sq_stable: SqStable(P),
ge: i ≥ j ,
respects-equality: respects-equality(S;T)
Lemmas referenced :
l_member_wf,
coordinate_name_wf,
istype-void,
name-morph_wf,
list_wf,
nameset_wf,
l_subset_right_cons_trivial,
cons_wf,
extd-nameset_subtype,
int_subtype_base,
istype-int,
le_wf,
set_subtype_base,
equal-wf-T-base,
assert_wf,
iff_weakening_uiff,
assert-bnot,
bool_wf,
subtype_base_sq,
bool_cases_sqequal,
bool_subtype_base,
eqff_to_assert,
assert-eq-cname,
eqtt_to_assert,
eq-cname_wf,
nameset_subtype_extd-nameset,
cons_member,
subtype_rel_transitivity,
extd-nameset_wf,
nameset_subtype,
iff_imp_equal_bool,
le_int_wf,
btrue_wf,
iff_functionality_wrt_iff,
true_wf,
assert_of_le_int,
iff_weakening_equal,
istype-true,
istype-le,
length_of_cons_lemma,
add_nat_plus,
length_wf_nat,
decidable__lt,
full-omega-unsat,
intformnot_wf,
intformless_wf,
itermConstant_wf,
int_formula_prop_not_lemma,
int_formula_prop_less_lemma,
int_term_value_constant_lemma,
int_formula_prop_wf,
istype-less_than,
nat_plus_properties,
add-is-int-iff,
intformand_wf,
itermVar_wf,
itermAdd_wf,
intformeq_wf,
int_formula_prop_and_lemma,
int_term_value_var_lemma,
int_term_value_add_lemma,
int_formula_prop_eq_lemma,
false_wf,
length_wf,
select_wf,
nat_properties,
sq_stable__le,
sq_stable__l_member,
decidable__equal-coordinate_name,
decidable__le,
intformle_wf,
int_formula_prop_le_lemma,
assert-isname,
subtype-respects-equality,
istype-assert,
isname_wf,
extd-nameset_subtype_base
Rules used in proof :
sqequalSubstitution,
sqequalTransitivity,
computationStep,
sqequalReflexivity,
isect_memberFormation_alt,
introduction,
cut,
sqequalRule,
dependent_set_memberEquality_alt,
sqequalHypSubstitution,
hypothesis,
axiomEquality,
equalityTransitivity,
equalitySymmetry,
functionIsType,
universeIsType,
extract_by_obid,
isectElimination,
thin,
hypothesisEquality,
isect_memberEquality_alt,
isectIsTypeImplies,
inhabitedIsType,
equalityIsType1,
natural_numberEquality,
closedConclusion,
intEquality,
voidElimination,
independent_functionElimination,
cumulativity,
instantiate,
dependent_functionElimination,
promote_hyp,
applyEquality,
equalityIsType3,
dependent_pairFormation_alt,
independent_isectElimination,
productElimination,
equalityElimination,
unionElimination,
lambdaFormation_alt,
because_Cache,
rename,
setElimination,
lambdaEquality_alt,
inlFormation_alt,
independent_pairFormation,
applyLambdaEquality,
imageMemberEquality,
baseClosed,
imageElimination,
approximateComputation,
Error :memTop,
pointwiseFunctionality,
baseApply,
int_eqEquality,
equalityIstype,
productIsType,
sqequalBase
Latex:
\mforall{}[I,J:Cname List]. \mforall{}[f:name-morph(I;J)]. \mforall{}[z1,z2:Cname].
f[z1:=z2] \mmember{} name-morph([z1 / I];[z2 / J]) supposing \mneg{}(z2 \mmember{} J)
Date html generated:
2020_05_21-AM-10_48_18
Last ObjectModification:
2019_12_10-PM-00_19_46
Theory : cubical!sets
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