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R0028-14562 · q-20261014-advance-20261029-r03-inner-product-induced-norm-0087
Use the same certified real inner product on R², <u,v>=u^T A v, with A=[[13, 2], [2, 5]] and x=[1, -1]. The complete integer matrix must be symmetric with a positive leading entry and positive determinant. The induced norm is the nonnegative sqrt(<x,x>), with exact sqrt(...) text retained without simplification. Cauchy–Schwarz is a universal mathematical certificate, not proved by these vector instances or a new Lean receipt. Completeness and Hilbert structure are not inferred. y=[-5, 1]. Give (x,y,lhs=norm_square(x+y)+norm_square(x−y),rhs=2*norm_square(x)+2*norm_square(y),equal?).
G001 — Use the same certified real inner product on R², <u,v>=u^T A v, with A=[[13, 2], [2, 5]] and x=[1, -1]. The complete integer matrix must be symmetric with a positive leading entry and positive determinant. The induced norm is the nonnegative sqrt(<x,x>), with exact sqrt(...) text retained without simplification. Cauchy–Schwarz is a universal mathematical certificate, not proved by these vector instances or a new Lean receipt. Completeness and Hilbert structure are not inferred. y=[-5, 1]. Give (x,y,lhs=norm_square(x+y)+norm_square(x−y),rhs=2*norm_square(x)+2*norm_square(y),equal?).Use the original question domain, assumptions and cited MKO definitions. This item has second-context mathematical and bilingual review, with the model, answer and every arithmetic step independently recomputed from the original parameters; the source question remains a candidate.
Before
inner parent diagonal product := mul(13, 5)
After
inner parent diagonal product = 65
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001
Before
inner parent off-diagonal product := mul(2, 2)
After
inner parent off-diagonal product = 4
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S001
Before
inner parent determinant := sub(65, 4)
After
inner parent determinant = 61
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S002
Before
same real R2 inner-product candidate matrix=[[13, 2], [2, 5]]
After
symmetric=Yes;leading=13;determinant=61
Conditions: none
Qualify the same symmetric positive-definite real R² parent matrix,not an unrelated Euclidean or coordinate norm.Symmetry,positive leading entry and positive determinant are required.
Rule: innernorm_certified_same_SPD_parent · Uses: G001, S003
Before
inner parent completed-square slope := div(2, 13)
After
inner parent completed-square slope = 2/13
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S004
Before
inner parent completed-square remainder := div(61, 13)
After
inner parent completed-square remainder = 61/13
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S005
Before
positive leading=13;slope=2/13;positive remainder=61/13
After
q(s,t)=(13)*(s+(2/13)*t)^2+(61/13)*t^2;positive iff(s,t)!=0
Conditions: none
The two positive completed-square coefficients give positive self-inner-product for every nonzero real vector and0 at zero,not merely sampled positive values.
Rule: innernorm_parent_global_positive_square_certificate · Uses: G001, S006
Before
same certified real inner product;arbitrary real x,y
After
if y=0 then inner(x,y)=0;otherwise yy>0 and q(x-a*y)=xx-2*a*xy+a^2*yy>=0
Conditions: none
For every real a,self-inner-product is nonnegative.When y≠0,yy>0;choose a=xy/yy to obtain xx−xy²/yy≥0,multiply by positive yy to get xy²≤xx*yy.Handle y=0 separately without0/0.
Rule: innernorm_Cauchy_Schwarz_all_vectors_quadratic · Uses: G001, S007
Before
norm(x)=nonnegative sqrt(inner(x,x));inner product positive definite and bilinear
After
norm(x)>=0;norm(x)=0 iff x=0;norm(a*x)=abs(a)*norm(x)
Conditions: none
Only the nonnegative root is the norm.From q(ax)=a²q(x),taking roots gives|a|,not a,including negative scalars.The zero and homogeneity claims are universal.
Rule: innernorm_nonnegative_root_and_absolute_homogeneity · Uses: G001, S008
Before
Cauchy-Schwarz holds for arbitrary x,y in this same inner product
After
norm(x+y)^2=xx+2*xy+yy<=(norm(x)+norm(y))^2;nonnegative roots give triangle inequality
Conditions: none
Bound the cross term by|xy|≤norm(x)norm(y),then take nonnegative roots for the universal triangle inequality.One exact instance is not the theorem's source,and no completeness follows.
Rule: innernorm_triangle_uses_universal_Cauchy_Schwarz · Uses: G001, S009
Before
x self-inner-product:same matrix=[[13, 2], [2, 5]];first vector=[1, -1];second vector=[1, -1]
After
inner product=first^T*(matrix*second)
Conditions: none
Use the same parent inner product:matrix times second slot,then dot with first.Derived rational vectors still belong to R² and are not clipped to raw integer input bounds.
Rule: innernorm_original_slot_roles · Uses: G001, S010
Before
x self-inner-product matrix term0,0 := mul(13, 1)
After
x self-inner-product matrix term0,0 = 13
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S011
Before
x self-inner-product matrix term0,1 := mul(2, -1)
After
x self-inner-product matrix term0,1 = -2
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S012
Before
x self-inner-product image coordinate0 := sum(13, -2)
After
x self-inner-product image coordinate0 = 11
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S013
Before
x self-inner-product matrix term1,0 := mul(2, 1)
After
x self-inner-product matrix term1,0 = 2
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S014
Before
x self-inner-product matrix term1,1 := mul(5, -1)
After
x self-inner-product matrix term1,1 = -5
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S015
Before
x self-inner-product image coordinate1 := sum(2, -5)
After
x self-inner-product image coordinate1 = -3
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S016
Before
x self-inner-product first-slot term0 := mul(1, 11)
After
x self-inner-product first-slot term0 = 11
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S017
Before
x self-inner-product first-slot term1 := mul(-1, -3)
After
x self-inner-product first-slot term1 = 3
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S018
Before
x self-inner-product inner sum := sum(11, 3)
After
x self-inner-product inner sum = 14
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S019
Before
y self-inner-product:same matrix=[[13, 2], [2, 5]];first vector=[-5, 1];second vector=[-5, 1]
After
inner product=first^T*(matrix*second)
Conditions: none
Use the same parent inner product:matrix times second slot,then dot with first.Derived rational vectors still belong to R² and are not clipped to raw integer input bounds.
Rule: innernorm_original_slot_roles · Uses: G001, S020
Before
y self-inner-product matrix term0,0 := mul(13, -5)
After
y self-inner-product matrix term0,0 = -65
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S021
Before
y self-inner-product matrix term0,1 := mul(2, 1)
After
y self-inner-product matrix term0,1 = 2
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S022
Before
y self-inner-product image coordinate0 := sum(-65, 2)
After
y self-inner-product image coordinate0 = -63
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S023
Before
y self-inner-product matrix term1,0 := mul(2, -5)
After
y self-inner-product matrix term1,0 = -10
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S024
Before
y self-inner-product matrix term1,1 := mul(5, 1)
After
y self-inner-product matrix term1,1 = 5
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S025
Before
y self-inner-product image coordinate1 := sum(-10, 5)
After
y self-inner-product image coordinate1 = -5
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S026
Before
y self-inner-product first-slot term0 := mul(-5, -63)
After
y self-inner-product first-slot term0 = 315
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S027
Before
y self-inner-product first-slot term1 := mul(1, -5)
After
y self-inner-product first-slot term1 = -5
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S028
Before
y self-inner-product inner sum := sum(315, -5)
After
y self-inner-product inner sum = 310
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S029
Before
parallelogram sum coordinate0 := sum(1, -5)
After
parallelogram sum coordinate0 = -4
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S030
Before
parallelogram sum coordinate1 := sum(-1, 1)
After
parallelogram sum coordinate1 = 0
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S031
Before
parallelogram difference coordinate0 := sub(1, -5)
After
parallelogram difference coordinate0 = 6
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S032
Before
parallelogram difference coordinate1 := sub(-1, 1)
After
parallelogram difference coordinate1 = -2
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S033
Before
sum self-inner-product:same matrix=[[13, 2], [2, 5]];first vector=[-4, 0];second vector=[-4, 0]
After
inner product=first^T*(matrix*second)
Conditions: none
Use the same parent inner product:matrix times second slot,then dot with first.Derived rational vectors still belong to R² and are not clipped to raw integer input bounds.
Rule: innernorm_original_slot_roles · Uses: G001, S034
Before
sum self-inner-product matrix term0,0 := mul(13, -4)
After
sum self-inner-product matrix term0,0 = -52
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S035
Before
sum self-inner-product matrix term0,1 := mul(2, 0)
After
sum self-inner-product matrix term0,1 = 0
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S036
Before
sum self-inner-product image coordinate0 := sum(-52, 0)
After
sum self-inner-product image coordinate0 = -52
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S037
Before
sum self-inner-product matrix term1,0 := mul(2, -4)
After
sum self-inner-product matrix term1,0 = -8
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S038
Before
sum self-inner-product matrix term1,1 := mul(5, 0)
After
sum self-inner-product matrix term1,1 = 0
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S039
Before
sum self-inner-product image coordinate1 := sum(-8, 0)
After
sum self-inner-product image coordinate1 = -8
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S040
Before
sum self-inner-product first-slot term0 := mul(-4, -52)
After
sum self-inner-product first-slot term0 = 208
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S041
Before
sum self-inner-product first-slot term1 := mul(0, -8)
After
sum self-inner-product first-slot term1 = 0
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S042
Before
sum self-inner-product inner sum := sum(208, 0)
After
sum self-inner-product inner sum = 208
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S043
Before
difference self-inner-product:same matrix=[[13, 2], [2, 5]];first vector=[6, -2];second vector=[6, -2]
After
inner product=first^T*(matrix*second)
Conditions: none
Use the same parent inner product:matrix times second slot,then dot with first.Derived rational vectors still belong to R² and are not clipped to raw integer input bounds.
Rule: innernorm_original_slot_roles · Uses: G001, S044
Before
difference self-inner-product matrix term0,0 := mul(13, 6)
After
difference self-inner-product matrix term0,0 = 78
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S045
Before
difference self-inner-product matrix term0,1 := mul(2, -2)
After
difference self-inner-product matrix term0,1 = -4
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S046
Before
difference self-inner-product image coordinate0 := sum(78, -4)
After
difference self-inner-product image coordinate0 = 74
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S047
Before
difference self-inner-product matrix term1,0 := mul(2, 6)
After
difference self-inner-product matrix term1,0 = 12
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S048
Before
difference self-inner-product matrix term1,1 := mul(5, -2)
After
difference self-inner-product matrix term1,1 = -10
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S049
Before
difference self-inner-product image coordinate1 := sum(12, -10)
After
difference self-inner-product image coordinate1 = 2
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S050
Before
difference self-inner-product first-slot term0 := mul(6, 74)
After
difference self-inner-product first-slot term0 = 444
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S051
Before
difference self-inner-product first-slot term1 := mul(-2, 2)
After
difference self-inner-product first-slot term1 = -4
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S052
Before
difference self-inner-product inner sum := sum(444, -4)
After
difference self-inner-product inner sum = 440
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S053
Before
parallelogram left sum := sum(208, 440)
After
parallelogram left sum = 648
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S054
Before
twice x self-inner-product := mul(2, 14)
After
twice x self-inner-product = 28
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S055
Before
twice y self-inner-product := mul(2, 310)
After
twice y self-inner-product = 620
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S056
Before
parallelogram right sum := sum(28, 620)
After
parallelogram right sum = 648
Conditions: none
Compute exactly from original roles and established intermediates,retaining denominators,signs,indices and necessary guards.
Rule: exact_rational_arithmetic · Uses: G001, S057
Before
same inner product;left=648;right=648
After
bilinear expansions have opposite cross terms which cancel;identity=Yes
Conditions: none
Expand q(x+y),q(x−y);their opposite±2xy terms cancel to2q(x)+2q(y).This instance neither constructs an inner product by converse nor certifies Hilbert completeness.
Rule: parallelogram_same_form_identity_not_Hilbert_claim · Uses: G001, S058
S059 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.S058 · premise_and_result_audit — Recompute parallelogram right sum with exact rational arithmetic, not rounded decimals.S057 · premise_and_result_audit — Recompute twice y self-inner-product with exact rational arithmetic, not rounded decimals.S056 · premise_and_result_audit — Recompute twice x self-inner-product with exact rational arithmetic, not rounded decimals.S055 · premise_and_result_audit — Recompute parallelogram left sum with exact rational arithmetic, not rounded decimals.S054 · premise_and_result_audit — Recompute difference self-inner-product inner sum with exact rational arithmetic, not rounded decimals.S053 · premise_and_result_audit — Recompute difference self-inner-product first-slot term1 with exact rational arithmetic, not rounded decimals.S052 · premise_and_result_audit — Recompute difference self-inner-product first-slot term0 with exact rational arithmetic, not rounded decimals.S051 · premise_and_result_audit — Recompute difference self-inner-product image coordinate1 with exact rational arithmetic, not rounded decimals.S050 · premise_and_result_audit — Recompute difference self-inner-product matrix term1,1 with exact rational arithmetic, not rounded decimals.S049 · premise_and_result_audit — Recompute difference self-inner-product matrix term1,0 with exact rational arithmetic, not rounded decimals.S048 · premise_and_result_audit — Recompute difference self-inner-product image coordinate0 with exact rational arithmetic, not rounded decimals.S047 · premise_and_result_audit — Recompute difference self-inner-product matrix term0,1 with exact rational arithmetic, not rounded decimals.S046 · premise_and_result_audit — Recompute difference self-inner-product matrix term0,0 with exact rational arithmetic, not rounded decimals.S045 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.S044 · premise_and_result_audit — Recompute sum self-inner-product inner sum with exact rational arithmetic, not rounded decimals.S043 · premise_and_result_audit — Recompute sum self-inner-product first-slot term1 with exact rational arithmetic, not rounded decimals.S042 · premise_and_result_audit — Recompute sum self-inner-product first-slot term0 with exact rational arithmetic, not rounded decimals.S041 · premise_and_result_audit — Recompute sum self-inner-product image coordinate1 with exact rational arithmetic, not rounded decimals.S040 · premise_and_result_audit — Recompute sum self-inner-product matrix term1,1 with exact rational arithmetic, not rounded decimals.S039 · premise_and_result_audit — Recompute sum self-inner-product matrix term1,0 with exact rational arithmetic, not rounded decimals.S038 · premise_and_result_audit — Recompute sum self-inner-product image coordinate0 with exact rational arithmetic, not rounded decimals.S037 · premise_and_result_audit — Recompute sum self-inner-product matrix term0,1 with exact rational arithmetic, not rounded decimals.S036 · premise_and_result_audit — Recompute sum self-inner-product matrix term0,0 with exact rational arithmetic, not rounded decimals.S035 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.S034 · premise_and_result_audit — Recompute parallelogram difference coordinate1 with exact rational arithmetic, not rounded decimals.S033 · premise_and_result_audit — Recompute parallelogram difference coordinate0 with exact rational arithmetic, not rounded decimals.S032 · premise_and_result_audit — Recompute parallelogram sum coordinate1 with exact rational arithmetic, not rounded decimals.S031 · premise_and_result_audit — Recompute parallelogram sum coordinate0 with exact rational arithmetic, not rounded decimals.S030 · premise_and_result_audit — Recompute y self-inner-product inner sum with exact rational arithmetic, not rounded decimals.S029 · premise_and_result_audit — Recompute y self-inner-product first-slot term1 with exact rational arithmetic, not rounded decimals.S028 · premise_and_result_audit — Recompute y self-inner-product first-slot term0 with exact rational arithmetic, not rounded decimals.S027 · premise_and_result_audit — Recompute y self-inner-product image coordinate1 with exact rational arithmetic, not rounded decimals.S026 · premise_and_result_audit — Recompute y self-inner-product matrix term1,1 with exact rational arithmetic, not rounded decimals.S025 · premise_and_result_audit — Recompute y self-inner-product matrix term1,0 with exact rational arithmetic, not rounded decimals.S024 · premise_and_result_audit — Recompute y self-inner-product image coordinate0 with exact rational arithmetic, not rounded decimals.S023 · premise_and_result_audit — Recompute y self-inner-product matrix term0,1 with exact rational arithmetic, not rounded decimals.S022 · premise_and_result_audit — Recompute y self-inner-product matrix term0,0 with exact rational arithmetic, not rounded decimals.S021 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.S020 · premise_and_result_audit — Recompute x self-inner-product inner sum with exact rational arithmetic, not rounded decimals.S019 · premise_and_result_audit — Recompute x self-inner-product first-slot term1 with exact rational arithmetic, not rounded decimals.S018 · premise_and_result_audit — Recompute x self-inner-product first-slot term0 with exact rational arithmetic, not rounded decimals.S017 · premise_and_result_audit — Recompute x self-inner-product image coordinate1 with exact rational arithmetic, not rounded decimals.S016 · premise_and_result_audit — Recompute x self-inner-product matrix term1,1 with exact rational arithmetic, not rounded decimals.S015 · premise_and_result_audit — Recompute x self-inner-product matrix term1,0 with exact rational arithmetic, not rounded decimals.S014 · premise_and_result_audit — Recompute x self-inner-product image coordinate0 with exact rational arithmetic, not rounded decimals.S013 · premise_and_result_audit — Recompute x self-inner-product matrix term0,1 with exact rational arithmetic, not rounded decimals.S012 · premise_and_result_audit — Recompute x self-inner-product matrix term0,0 with exact rational arithmetic, not rounded decimals.S011 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.S010 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.S009 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.S008 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.S007 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.S006 · premise_and_result_audit — Recompute inner parent completed-square remainder with exact rational arithmetic, not rounded decimals.S005 · premise_and_result_audit — Recompute inner parent completed-square slope with exact rational arithmetic, not rounded decimals.S004 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.S003 · premise_and_result_audit — Recompute inner parent determinant with exact rational arithmetic, not rounded decimals.S002 · premise_and_result_audit — Recompute inner parent off-diagonal product with exact rational arithmetic, not rounded decimals.S001 · premise_and_result_audit — Recompute inner parent diagonal product with exact rational arithmetic, not rounded decimals.([1, -1], [-5, 1], 648, 648, Yes)
The full substitutions and premise checks give the original answer; source identity,format and status are unchanged.
Review date: 2026-10-26
Original questions, answers, step expressions, numeric ASTs and historical records are retained. Source candidate labels remain historical and are not overwritten as formal proof.
input commit: 0f7be61e2c22317a4075561dc822c87d881a50dboriginal question SHA-256: a874bef202bcbdf47b7e32d24fa202da30c3aa76edc55e90435cd583553a6162candidate record SHA-256: d5a757ccc0288d0a56532786d7ccc619fd2c0ae2b368173085b6a8992637e05esemantic review receipt SHA-256: bfea39236e49aa7e44aa18bfa0d7857ff34a6acb762d0599e20b0f5af0f209aequestion-first witness SHA-256: 61c433f5c1e55ed4d84d08557fb8c117d26bbd404fdf05519ad42c09324c36e0Lean: NOT_RUN · human review: NOT_PERFORMED