Explore related knowledge and questions →
← Question derivation index · Original question batch
R0024-12609 · q-20261013-advance-20261026-r02-real-normed-vector-space-0084
Only the named real-coordinate formulas l1(v)=sum_i |v_i| and linfinity(v)=max_i |v_i| are supported here. Their universal algebraic certificates, not a finite sample, supply the norm axioms. An unsupported name is outside this protocol, not a claim that every other formula fails to be a norm. norm_name=l1, left=[-4, -2, -3], right=[4, -5, -2] with equal dimension. Give (norm_name,left,right,left−right,distance).
G001 — Only the named real-coordinate formulas l1(v)=sum_i |v_i| and linfinity(v)=max_i |v_i| are supported here. Their universal algebraic certificates, not a finite sample, supply the norm axioms. An unsupported name is outside this protocol, not a claim that every other formula fails to be a norm. norm_name=l1, left=[-4, -2, -3], right=[4, -5, -2] with equal dimension. Give (norm_name,left,right,left−right,distance).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
distance coordinate0 left-minus-right := sub(-4, 4)
After
distance coordinate0 left-minus-right = -8
Conditions: none
Compute exactly from the original roles and complete established operands,without changing pairings,order or replacing guards by approximation.
Rule: exact_rational_arithmetic · Uses: G001
Before
distance coordinate1 left-minus-right := sub(-2, -5)
After
distance coordinate1 left-minus-right = 3
Conditions: none
Compute exactly from the original roles and complete established operands,without changing pairings,order or replacing guards by approximation.
Rule: exact_rational_arithmetic · Uses: G001, S001
Before
distance coordinate2 left-minus-right := sub(-3, -2)
After
distance coordinate2 left-minus-right = -1
Conditions: none
Compute exactly from the original roles and complete established operands,without changing pairings,order or replacing guards by approximation.
Rule: exact_rational_arithmetic · Uses: G001, S002
Before
named certified norm=l1;left=[-4, -2, -3];right=[4, -5, -2]
After
ordered difference=[-8, 3, -1];distance=norm(left-right)
Conditions: none
Use the same named norm on the same coordinate space and retain the difference direction.This does not assert every metric is norm-induced,or add completeness or inner-product claims.
Rule: fixed_norm_induced_distance_scope · Uses: G001, S003
Before
induced distance:coordinate=0;signed value=-8
After
absolute value=8
Conditions: none
Take the absolute value of each entire coordinate.Negative coordinates are not summed or maximized as signed values;retain the original signed vector.
Rule: named_norm_each_coordinate_absolute_value · Uses: G001, S004
Before
induced distance:coordinate=1;signed value=3
After
absolute value=3
Conditions: none
Take the absolute value of each entire coordinate.Negative coordinates are not summed or maximized as signed values;retain the original signed vector.
Rule: named_norm_each_coordinate_absolute_value · Uses: G001, S005
Before
induced distance:coordinate=2;signed value=-1
After
absolute value=1
Conditions: none
Take the absolute value of each entire coordinate.Negative coordinates are not summed or maximized as signed values;retain the original signed vector.
Rule: named_norm_each_coordinate_absolute_value · Uses: G001, S006
Before
induced distance l1 sum := sum(8, 3, 1)
After
induced distance l1 sum = 12
Conditions: none
Compute exactly from the original roles and complete established operands,without changing pairings,order or replacing guards by approximation.
Rule: exact_rational_arithmetic · Uses: G001, S007
S008 · premise_and_result_audit — Recompute induced distance l1 sum with exact rational arithmetic, not rounded decimals.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 — Check against the original data and this step's premises; a one-way implication is not an equivalence.S005 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.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 distance coordinate2 left-minus-right with exact rational arithmetic, not rounded decimals.S002 · premise_and_result_audit — Recompute distance coordinate1 left-minus-right with exact rational arithmetic, not rounded decimals.S001 · premise_and_result_audit — Recompute distance coordinate0 left-minus-right with exact rational arithmetic, not rounded decimals.(l1, [-4, -2, -3], [4, -5, -2], [-8, 3, -1], 12)
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: 6b9b7203b3ee3edc67190474c6372e5124a3e9f8d8ca10c3434869490f378ebdcandidate record SHA-256: 652291c4e49b850ecee60900d6a9e4fe870dbede9b4c5650c140342f0f9030dasemantic review receipt SHA-256: 1c8f6c2c6c75852cb93c08235684ce9f32ebe86065c58c693a04257e772c2d35question-first witness SHA-256: 05fd764b5f9f7fff6185003efe576d87632f6daf40606ac3839a7feafe4f80d8Lean: NOT_RUN · human review: NOT_PERFORMED