Nuprl Lemma : rmaximum_functionality
∀[n,m:ℤ].
∀[x,y:{n..m + 1-} ⟶ ℝ].
rmaximum(n;m;k.x[k]) = rmaximum(n;m;k.y[k]) supposing ∀k:ℤ. ((n ≤ k) ⇒ (k ≤ m) ⇒ (x[k] = y[k]))
supposing n ≤ m
Proof
Definitions occuring in Statement :
rmaximum: rmaximum(n;m;k.x[k]),
req: x = y,
real: ℝ,
int_seg: {i..j-},
uimplies: b supposing a,
uall: ∀[x:A]. B[x],
so_apply: x[s],
le: A ≤ B,
all: ∀x:A. B[x],
implies: P ⇒ Q,
function: x:A ⟶ B[x],
add: n + m,
natural_number: $n,
int: ℤ
Definitions unfolded in proof :
true: True,
less_than': less_than'(a;b),
subtract: n - m,
rev_implies: P ⇐ Q,
iff: P ⇐⇒ Q,
le: A ≤ B,
bfalse: ff,
ifthenelse: if b then t else f fi ,
uiff: uiff(P;Q),
subtype_rel: A ⊆r B,
btrue: tt,
it: ⋅,
unit: Unit,
bool: 𝔹,
so_lambda: λ2x.t[x],
lelt: i ≤ j < k,
int_seg: {i..j-},
so_apply: x[s],
sq_type: SQType(T),
ge: i ≥ j ,
guard: {T},
prop: ℙ,
and: P ∧ Q,
top: Top,
false: False,
exists: ∃x:A. B[x],
satisfiable_int_formula: satisfiable_int_formula(fmla),
implies: P ⇒ Q,
not: ¬A,
or: P ∨ Q,
decidable: Dec(P),
all: ∀x:A. B[x],
nat: ℕ,
rmaximum: rmaximum(n;m;k.x[k]),
uimplies: b supposing a,
member: t ∈ T,
uall: ∀[x:A]. B[x]
Lemmas referenced :
subtract-add-cancel,
rmax_functionality,
subtype_rel_self,
le-add-cancel,
add-commutes,
add-zero,
zero-add,
zero-mul,
add-mul-special,
minus-one-mul-top,
add-swap,
minus-one-mul,
minus-add,
add-associates,
condition-implies-le,
not-le-2,
false_wf,
le_reflexive,
int_seg_subtype,
subtype_rel_function,
primrec-unroll,
assert_of_le_int,
bnot_of_lt_int,
assert_functionality_wrt_uiff,
eqff_to_assert,
bnot_wf,
le_int_wf,
assert_of_lt_int,
eqtt_to_assert,
assert_wf,
equal-wf-base,
uiff_transitivity,
bool_wf,
lt_int_wf,
rmaximum_wf,
equal_wf,
decidable__lt,
primrec0_lemma,
req_wf,
all_wf,
int_seg_properties,
rmax_wf,
lelt_wf,
int_seg_wf,
real_wf,
primrec_wf,
req_witness,
less_than_wf,
ge_wf,
int_formula_prop_less_lemma,
intformless_wf,
int_term_value_add_lemma,
int_formula_prop_eq_lemma,
itermAdd_wf,
intformeq_wf,
decidable__equal_int,
nat_properties,
int_subtype_base,
subtype_base_sq,
nat_wf,
le_wf,
int_formula_prop_wf,
int_term_value_var_lemma,
int_term_value_subtract_lemma,
int_term_value_constant_lemma,
int_formula_prop_le_lemma,
int_formula_prop_not_lemma,
int_formula_prop_and_lemma,
itermVar_wf,
itermSubtract_wf,
itermConstant_wf,
intformle_wf,
intformnot_wf,
intformand_wf,
full-omega-unsat,
subtract_wf,
decidable__le
Rules used in proof :
multiplyEquality,
minusEquality,
baseClosed,
closedConclusion,
baseApply,
equalityElimination,
functionEquality,
productElimination,
addEquality,
functionExtensionality,
applyEquality,
intWeakElimination,
rename,
setElimination,
applyLambdaEquality,
equalitySymmetry,
equalityTransitivity,
cumulativity,
instantiate,
lambdaFormation,
independent_pairFormation,
voidEquality,
voidElimination,
isect_memberEquality,
intEquality,
int_eqEquality,
lambdaEquality,
dependent_pairFormation,
independent_functionElimination,
approximateComputation,
independent_isectElimination,
unionElimination,
hypothesis,
hypothesisEquality,
isectElimination,
natural_numberEquality,
dependent_functionElimination,
sqequalHypSubstitution,
extract_by_obid,
because_Cache,
dependent_set_memberEquality,
sqequalRule,
thin,
cut,
introduction,
isect_memberFormation,
sqequalReflexivity,
computationStep,
sqequalTransitivity,
sqequalSubstitution
Latex:
\mforall{}[n,m:\mBbbZ{}].
\mforall{}[x,y:\{n..m + 1\msupminus{}\} {}\mrightarrow{} \mBbbR{}].
rmaximum(n;m;k.x[k]) = rmaximum(n;m;k.y[k])
supposing \mforall{}k:\mBbbZ{}. ((n \mleq{} k) {}\mRightarrow{} (k \mleq{} m) {}\mRightarrow{} (x[k] = y[k]))
supposing n \mleq{} m
Date html generated:
2018_05_22-PM-01_56_46
Last ObjectModification:
2018_05_21-AM-00_12_03
Theory : reals
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