Nuprl Lemma : p2-incidence
∀[p,v:ℙ^2].  uiff(v on p;((((v 0) * (p 0)) + ((v 1) * (p 1))) - (v 2) * (p 2)) = r0)
Proof
Definitions occuring in Statement : 
proj-incidence: v on p
, 
real-proj: ℙ^n
, 
rsub: x - y
, 
req: x = y
, 
rmul: a * b
, 
radd: a + b
, 
int-to-real: r(n)
, 
uiff: uiff(P;Q)
, 
uall: ∀[x:A]. B[x]
, 
apply: f a
, 
natural_number: $n
Definitions unfolded in proof : 
uall: ∀[x:A]. B[x]
, 
member: t ∈ T
, 
uiff: uiff(P;Q)
, 
and: P ∧ Q
, 
uimplies: b supposing a
, 
real-proj: ℙ^n
, 
real-vec: ℝ^n
, 
int_seg: {i..j-}
, 
lelt: i ≤ j < k
, 
le: A ≤ B
, 
less_than': less_than'(a;b)
, 
false: False
, 
not: ¬A
, 
implies: P 
⇒ Q
, 
prop: ℙ
, 
less_than: a < b
, 
squash: ↓T
, 
true: True
, 
nat: ℕ
, 
proj-incidence: v on p
, 
subtype_rel: A ⊆r B
, 
proj-rev: proj-rev(n;p)
, 
dot-product: x⋅y
, 
subtract: n - m
, 
so_lambda: λ2x.t[x]
, 
so_apply: x[s]
, 
all: ∀x:A. B[x]
, 
bool: 𝔹
, 
unit: Unit
, 
it: ⋅
, 
btrue: tt
, 
ifthenelse: if b then t else f fi 
, 
bfalse: ff
, 
exists: ∃x:A. B[x]
, 
or: P ∨ Q
, 
sq_type: SQType(T)
, 
guard: {T}
, 
bnot: ¬bb
, 
assert: ↑b
, 
nequal: a ≠ b ∈ T 
, 
decidable: Dec(P)
, 
satisfiable_int_formula: satisfiable_int_formula(fmla)
, 
top: Top
, 
lt_int: i <z j
, 
eq_int: (i =z j)
, 
req_int_terms: t1 ≡ t2
, 
rev_uimplies: rev_uimplies(P;Q)
Lemmas referenced : 
req_witness, 
rsub_wf, 
radd_wf, 
rmul_wf, 
false_wf, 
lelt_wf, 
int-to-real_wf, 
proj-incidence_wf, 
le_wf, 
dot-product_wf, 
proj-rev_wf, 
real-proj_wf, 
req_wf, 
rsum_wf, 
ifthenelse_wf, 
lt_int_wf, 
real_wf, 
rminus_wf, 
int_seg_wf, 
bool_wf, 
eqtt_to_assert, 
assert_of_lt_int, 
eqff_to_assert, 
equal_wf, 
bool_cases_sqequal, 
subtype_base_sq, 
bool_subtype_base, 
assert-bnot, 
less_than_wf, 
eq_int_wf, 
assert_of_eq_int, 
int_subtype_base, 
neg_assert_of_eq_int, 
subtract_wf, 
subtract-add-cancel, 
decidable__lt, 
full-omega-unsat, 
intformand_wf, 
intformnot_wf, 
intformless_wf, 
itermVar_wf, 
itermAdd_wf, 
itermConstant_wf, 
int_formula_prop_and_lemma, 
int_formula_prop_not_lemma, 
int_formula_prop_less_lemma, 
int_term_value_var_lemma, 
int_term_value_add_lemma, 
int_term_value_constant_lemma, 
int_formula_prop_wf, 
req-implies-req, 
itermSubtract_wf, 
itermMultiply_wf, 
itermMinus_wf, 
req-iff-rsub-is-0, 
req_functionality, 
rsum_unroll, 
req_weakening, 
radd_functionality, 
rsum_single, 
real_polynomial_null, 
real_term_value_sub_lemma, 
real_term_value_const_lemma, 
real_term_value_add_lemma, 
real_term_value_mul_lemma, 
real_term_value_var_lemma, 
real_term_value_minus_lemma
Rules used in proof : 
sqequalSubstitution, 
sqequalTransitivity, 
computationStep, 
sqequalReflexivity, 
isect_memberFormation, 
introduction, 
cut, 
independent_pairFormation, 
extract_by_obid, 
sqequalHypSubstitution, 
isectElimination, 
thin, 
applyEquality, 
setElimination, 
rename, 
because_Cache, 
hypothesis, 
sqequalRule, 
dependent_set_memberEquality, 
natural_numberEquality, 
lambdaFormation, 
imageMemberEquality, 
hypothesisEquality, 
baseClosed, 
independent_functionElimination, 
addEquality, 
lambdaEquality, 
productElimination, 
independent_pairEquality, 
isect_memberEquality, 
equalityTransitivity, 
equalitySymmetry, 
unionElimination, 
equalityElimination, 
independent_isectElimination, 
dependent_pairFormation, 
promote_hyp, 
dependent_functionElimination, 
instantiate, 
cumulativity, 
voidElimination, 
intEquality, 
approximateComputation, 
int_eqEquality, 
voidEquality
Latex:
\mforall{}[p,v:\mBbbP{}\^{}2].    uiff(v  on  p;((((v  0)  *  (p  0))  +  ((v  1)  *  (p  1)))  -  (v  2)  *  (p  2))  =  r0)
Date html generated:
2017_10_05-AM-00_19_55
Last ObjectModification:
2017_06_17-AM-10_08_53
Theory : inner!product!spaces
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