Nuprl Lemma : real-det_wf
∀[n:ℕ]. ∀[M:ℕn ⟶ ℕn ⟶ ℝ].  (|M| ∈ ℝ)
Proof
Definitions occuring in Statement : 
real-det: |M|
, 
real: ℝ
, 
int_seg: {i..j-}
, 
nat: ℕ
, 
uall: ∀[x:A]. B[x]
, 
member: t ∈ T
, 
function: x:A ⟶ B[x]
, 
natural_number: $n
Definitions unfolded in proof : 
uall: ∀[x:A]. B[x]
, 
member: t ∈ T
, 
real-det: |M|
, 
let: let, 
nat: ℕ
, 
injection: A →⟶ B
, 
subtype_rel: A ⊆r B
, 
all: ∀x:A. B[x]
, 
implies: P 
⇒ Q
, 
bool: 𝔹
, 
unit: Unit
, 
it: ⋅
, 
btrue: tt
, 
uiff: uiff(P;Q)
, 
and: P ∧ Q
, 
uimplies: b supposing a
, 
so_lambda: λ2x.t[x]
, 
int_seg: {i..j-}
, 
lelt: i ≤ j < k
, 
ge: i ≥ j 
, 
decidable: Dec(P)
, 
or: P ∨ Q
, 
not: ¬A
, 
satisfiable_int_formula: satisfiable_int_formula(fmla)
, 
exists: ∃x:A. B[x]
, 
false: False
, 
top: Top
, 
prop: ℙ
, 
so_apply: x[s]
, 
bfalse: ff
, 
sq_type: SQType(T)
, 
guard: {T}
, 
bnot: ¬bb
, 
ifthenelse: if b then t else f fi 
, 
assert: ↑b
, 
nequal: a ≠ b ∈ T 
Lemmas referenced : 
r-list-sum_wf, 
map_wf, 
injection_wf, 
int_seg_wf, 
real_wf, 
permutation-sign_wf, 
eq_int_wf, 
eqtt_to_assert, 
assert_of_eq_int, 
rprod_wf, 
subtract_wf, 
subtract-add-cancel, 
nat_properties, 
decidable__lt, 
full-omega-unsat, 
intformand_wf, 
intformnot_wf, 
intformless_wf, 
itermVar_wf, 
istype-int, 
int_formula_prop_and_lemma, 
istype-void, 
int_formula_prop_not_lemma, 
int_formula_prop_less_lemma, 
int_term_value_var_lemma, 
int_formula_prop_wf, 
istype-le, 
istype-less_than, 
eqff_to_assert, 
bool_cases_sqequal, 
subtype_base_sq, 
bool_wf, 
bool_subtype_base, 
assert-bnot, 
neg_assert_of_eq_int, 
rminus_wf, 
permutations-list_wf, 
istype-nat
Rules used in proof : 
sqequalSubstitution, 
sqequalTransitivity, 
computationStep, 
sqequalReflexivity, 
isect_memberFormation_alt, 
introduction, 
cut, 
sqequalRule, 
extract_by_obid, 
sqequalHypSubstitution, 
isectElimination, 
thin, 
closedConclusion, 
natural_numberEquality, 
setElimination, 
rename, 
because_Cache, 
hypothesis, 
lambdaEquality_alt, 
hypothesisEquality, 
applyEquality, 
inhabitedIsType, 
lambdaFormation_alt, 
unionElimination, 
equalityElimination, 
productElimination, 
independent_isectElimination, 
int_eqReduceTrueSq, 
dependent_set_memberEquality_alt, 
independent_pairFormation, 
equalityTransitivity, 
equalitySymmetry, 
dependent_functionElimination, 
approximateComputation, 
independent_functionElimination, 
dependent_pairFormation_alt, 
int_eqEquality, 
isect_memberEquality_alt, 
voidElimination, 
universeIsType, 
productIsType, 
addEquality, 
equalityIstype, 
promote_hyp, 
instantiate, 
cumulativity, 
int_eqReduceFalseSq, 
axiomEquality, 
functionIsType, 
isectIsTypeImplies
Latex:
\mforall{}[n:\mBbbN{}].  \mforall{}[M:\mBbbN{}n  {}\mrightarrow{}  \mBbbN{}n  {}\mrightarrow{}  \mBbbR{}].    (|M|  \mmember{}  \mBbbR{})
Date html generated:
2019_10_30-AM-08_21_00
Last ObjectModification:
2019_09_18-PM-05_15_29
Theory : reals
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