Nuprl Lemma : append-finite-nat-seq_wf
∀[f,g:finite-nat-seq()].  (f**g ∈ finite-nat-seq())
Proof
Definitions occuring in Statement : 
append-finite-nat-seq: f**g
, 
finite-nat-seq: finite-nat-seq()
, 
uall: ∀[x:A]. B[x]
, 
member: t ∈ T
Definitions unfolded in proof : 
uall: ∀[x:A]. B[x]
, 
member: t ∈ T
, 
append-finite-nat-seq: f**g
, 
finite-nat-seq: finite-nat-seq()
, 
nat: ℕ
, 
ge: i ≥ j 
, 
all: ∀x:A. B[x]
, 
decidable: Dec(P)
, 
or: P ∨ Q
, 
uimplies: b supposing a
, 
not: ¬A
, 
implies: P 
⇒ Q
, 
satisfiable_int_formula: satisfiable_int_formula(fmla)
, 
exists: ∃x:A. B[x]
, 
false: False
, 
top: Top
, 
and: P ∧ Q
, 
prop: ℙ
, 
int_seg: {i..j-}
, 
less_than: a < b
, 
less_than': less_than'(a;b)
, 
true: True
, 
squash: ↓T
, 
lelt: i ≤ j < k
, 
guard: {T}
Lemmas referenced : 
mk-finite-nat-seq_wf, 
nat_properties, 
decidable__le, 
full-omega-unsat, 
intformand_wf, 
intformnot_wf, 
intformle_wf, 
itermConstant_wf, 
itermAdd_wf, 
itermVar_wf, 
int_formula_prop_and_lemma, 
int_formula_prop_not_lemma, 
int_formula_prop_le_lemma, 
int_term_value_constant_lemma, 
int_term_value_add_lemma, 
int_term_value_var_lemma, 
int_formula_prop_wf, 
le_wf, 
top_wf, 
less_than_wf, 
int_seg_wf, 
lelt_wf, 
subtract_wf, 
int_seg_properties, 
itermSubtract_wf, 
intformless_wf, 
int_term_value_subtract_lemma, 
int_formula_prop_less_lemma, 
decidable__lt, 
finite-nat-seq_wf
Rules used in proof : 
sqequalSubstitution, 
sqequalTransitivity, 
computationStep, 
sqequalReflexivity, 
isect_memberFormation, 
introduction, 
cut, 
sqequalRule, 
sqequalHypSubstitution, 
productElimination, 
thin, 
extract_by_obid, 
isectElimination, 
dependent_set_memberEquality, 
addEquality, 
setElimination, 
rename, 
because_Cache, 
hypothesis, 
hypothesisEquality, 
dependent_functionElimination, 
natural_numberEquality, 
unionElimination, 
independent_isectElimination, 
approximateComputation, 
independent_functionElimination, 
dependent_pairFormation, 
lambdaEquality, 
int_eqEquality, 
intEquality, 
isect_memberEquality, 
voidElimination, 
voidEquality, 
independent_pairFormation, 
lessCases, 
baseClosed, 
equalityTransitivity, 
equalitySymmetry, 
imageMemberEquality, 
axiomSqEquality, 
lambdaFormation, 
imageElimination, 
applyEquality, 
functionExtensionality, 
axiomEquality
Latex:
\mforall{}[f,g:finite-nat-seq()].    (f**g  \mmember{}  finite-nat-seq())
Date html generated:
2019_06_20-PM-03_03_08
Last ObjectModification:
2018_08_20-PM-09_40_32
Theory : continuity
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