Nuprl Lemma : fpf-join-list-ap-disjoint
∀[A:Type]. ∀[eq:EqDecider(A)]. ∀[B:A ⟶ Type]. ∀[L:a:A fp-> B[a] List]. ∀[x:A].
  (∀[f:a:A fp-> B[a]]. (⊕(L)(x) = f(x) ∈ B[x]) supposing ((↑x ∈ dom(f)) and (f ∈ L))) supposing 
     ((∀f,g∈L.  ∀x:A. (¬((↑x ∈ dom(f)) ∧ (↑x ∈ dom(g))))) and 
     (↑x ∈ dom(⊕(L))))
Proof
Definitions occuring in Statement : 
fpf-join-list: ⊕(L)
, 
fpf-ap: f(x)
, 
fpf-dom: x ∈ dom(f)
, 
fpf: a:A fp-> B[a]
, 
pairwise: (∀x,y∈L.  P[x; y])
, 
l_member: (x ∈ l)
, 
list: T List
, 
deq: EqDecider(T)
, 
assert: ↑b
, 
uimplies: b supposing a
, 
uall: ∀[x:A]. B[x]
, 
so_apply: x[s]
, 
all: ∀x:A. B[x]
, 
not: ¬A
, 
and: P ∧ Q
, 
function: x:A ⟶ B[x]
, 
universe: Type
, 
equal: s = t ∈ T
Definitions unfolded in proof : 
uall: ∀[x:A]. B[x]
, 
member: t ∈ T
, 
all: ∀x:A. B[x]
, 
uimplies: b supposing a
, 
l_exists: (∃x∈L. P[x])
, 
exists: ∃x:A. B[x]
, 
and: P ∧ Q
, 
prop: ℙ
, 
subtype_rel: A ⊆r B
, 
so_lambda: λ2x.t[x]
, 
so_apply: x[s]
, 
top: Top
, 
so_lambda: λ2x y.t[x; y]
, 
so_apply: x[s1;s2]
, 
l_member: (x ∈ l)
, 
cand: A c∧ B
, 
int_seg: {i..j-}
, 
nat: ℕ
, 
decidable: Dec(P)
, 
or: P ∨ Q
, 
pairwise: (∀x,y∈L.  P[x; y])
, 
lelt: i ≤ j < k
, 
le: A ≤ B
, 
less_than: a < b
, 
not: ¬A
, 
implies: P 
⇒ Q
, 
squash: ↓T
, 
true: True
, 
guard: {T}
, 
uiff: uiff(P;Q)
, 
rev_uimplies: rev_uimplies(P;Q)
, 
false: False
, 
ge: i ≥ j 
, 
satisfiable_int_formula: satisfiable_int_formula(fmla)
Lemmas referenced : 
fpf-join-list-ap, 
assert_wf, 
fpf-dom_wf, 
subtype-fpf2, 
top_wf, 
l_member_wf, 
fpf_wf, 
pairwise_wf2, 
all_wf, 
not_wf, 
fpf-join-list_wf, 
subtype_rel_list, 
list_wf, 
equal_wf, 
fpf-ap_wf, 
decidable__lt, 
lelt_wf, 
length_wf, 
assert_functionality_wrt_uiff, 
squash_wf, 
true_wf, 
deq_wf, 
nat_properties, 
int_seg_properties, 
decidable__equal_int, 
satisfiable-full-omega-tt, 
intformand_wf, 
intformnot_wf, 
intformeq_wf, 
itermVar_wf, 
intformless_wf, 
int_formula_prop_and_lemma, 
int_formula_prop_not_lemma, 
int_formula_prop_eq_lemma, 
int_term_value_var_lemma, 
int_formula_prop_less_lemma, 
int_formula_prop_wf, 
select_wf, 
le_wf, 
less_than_wf, 
decidable__le, 
intformle_wf, 
itermConstant_wf, 
int_formula_prop_le_lemma, 
int_term_value_constant_lemma
Rules used in proof : 
cut, 
introduction, 
extract_by_obid, 
sqequalSubstitution, 
sqequalTransitivity, 
computationStep, 
sqequalReflexivity, 
isect_memberFormation, 
hypothesis, 
sqequalHypSubstitution, 
isectElimination, 
thin, 
hypothesisEquality, 
dependent_functionElimination, 
independent_isectElimination, 
productElimination, 
cumulativity, 
applyEquality, 
sqequalRule, 
lambdaEquality, 
functionExtensionality, 
lambdaFormation, 
isect_memberEquality, 
voidElimination, 
voidEquality, 
because_Cache, 
axiomEquality, 
equalityTransitivity, 
equalitySymmetry, 
instantiate, 
productEquality, 
functionEquality, 
universeEquality, 
hyp_replacement, 
applyLambdaEquality, 
setElimination, 
rename, 
unionElimination, 
dependent_set_memberEquality, 
independent_pairFormation, 
independent_functionElimination, 
imageElimination, 
natural_numberEquality, 
imageMemberEquality, 
baseClosed, 
dependent_pairFormation, 
int_eqEquality, 
intEquality, 
computeAll
Latex:
\mforall{}[A:Type].  \mforall{}[eq:EqDecider(A)].  \mforall{}[B:A  {}\mrightarrow{}  Type].  \mforall{}[L:a:A  fp->  B[a]  List].  \mforall{}[x:A].
    (\mforall{}[f:a:A  fp->  B[a]].  (\moplus{}(L)(x)  =  f(x))  supposing  ((\muparrow{}x  \mmember{}  dom(f))  and  (f  \mmember{}  L)))  supposing 
          ((\mforall{}f,g\mmember{}L.    \mforall{}x:A.  (\mneg{}((\muparrow{}x  \mmember{}  dom(f))  \mwedge{}  (\muparrow{}x  \mmember{}  dom(g)))))  and 
          (\muparrow{}x  \mmember{}  dom(\moplus{}(L))))
Date html generated:
2018_05_21-PM-09_23_04
Last ObjectModification:
2018_02_09-AM-10_19_03
Theory : finite!partial!functions
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