Nuprl Lemma : no_repeats_from-upto
∀[n1,n2:ℤ].  no_repeats(ℤ;[n1, n2))
Proof
Definitions occuring in Statement : 
from-upto: [n, m)
, 
no_repeats: no_repeats(T;l)
, 
uall: ∀[x:A]. B[x]
, 
int: ℤ
Definitions unfolded in proof : 
uall: ∀[x:A]. B[x]
, 
member: t ∈ T
, 
no_repeats: no_repeats(T;l)
, 
uimplies: b supposing a
, 
not: ¬A
, 
implies: P 
⇒ Q
, 
false: False
, 
prop: ℙ
, 
nat: ℕ
, 
ge: i ≥ j 
, 
all: ∀x:A. B[x]
, 
decidable: Dec(P)
, 
or: P ∨ Q
, 
satisfiable_int_formula: satisfiable_int_formula(fmla)
, 
exists: ∃x:A. B[x]
, 
top: Top
, 
and: P ∧ Q
, 
subtype_rel: A ⊆r B
, 
int_seg: {i..j-}
, 
lelt: i ≤ j < k
, 
le: A ≤ B
, 
sq_type: SQType(T)
, 
guard: {T}
, 
uiff: uiff(P;Q)
, 
ifthenelse: if b then t else f fi 
, 
btrue: tt
, 
iff: P 
⇐⇒ Q
, 
rev_implies: P 
⇐ Q
, 
bfalse: ff
Lemmas referenced : 
length-from-upto, 
equal_wf, 
select_wf, 
nat_properties, 
decidable__le, 
satisfiable-full-omega-tt, 
intformand_wf, 
intformnot_wf, 
intformle_wf, 
itermConstant_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_var_lemma, 
int_formula_prop_wf, 
le_wf, 
less_than_wf, 
not_wf, 
nat_wf, 
length_wf, 
from-upto_wf, 
no_repeats_witness, 
subtype_rel_list, 
lt_int_wf, 
lelt_wf, 
subtract_wf, 
intformeq_wf, 
itermAdd_wf, 
int_formula_prop_eq_lemma, 
int_term_value_add_lemma, 
decidable__equal_int, 
equal-wf-base, 
int_subtype_base, 
assert_wf, 
bnot_wf, 
intformless_wf, 
int_formula_prop_less_lemma, 
bool_cases, 
subtype_base_sq, 
bool_wf, 
bool_subtype_base, 
eqtt_to_assert, 
assert_of_lt_int, 
eqff_to_assert, 
iff_transitivity, 
iff_weakening_uiff, 
assert_of_bnot, 
select-from-upto
Rules used in proof : 
sqequalSubstitution, 
sqequalTransitivity, 
computationStep, 
sqequalReflexivity, 
isect_memberFormation, 
introduction, 
cut, 
lambdaFormation, 
thin, 
sqequalHypSubstitution, 
sqequalRule, 
extract_by_obid, 
isectElimination, 
hypothesisEquality, 
hypothesis, 
because_Cache, 
independent_functionElimination, 
voidElimination, 
independent_isectElimination, 
setElimination, 
rename, 
dependent_functionElimination, 
unionElimination, 
natural_numberEquality, 
dependent_pairFormation, 
lambdaEquality, 
int_eqEquality, 
intEquality, 
isect_memberEquality, 
voidEquality, 
independent_pairFormation, 
computeAll, 
applyEquality, 
setEquality, 
productEquality, 
equalityTransitivity, 
equalitySymmetry, 
dependent_set_memberEquality, 
productElimination, 
instantiate, 
cumulativity, 
impliesFunctionality
Latex:
\mforall{}[n1,n2:\mBbbZ{}].    no\_repeats(\mBbbZ{};[n1,  n2))
Date html generated:
2017_04_17-AM-07_55_50
Last ObjectModification:
2017_02_27-PM-04_28_32
Theory : list_1
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