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Question 11340: A Row Initial Law Advances by mu*P

On this page
  1. Original question and givens
  2. Definition and scope
  3. Step-by-step derivation
  4. Reverse checks
  5. Result
  6. This question review and source binding

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R0021-11340 · q-20261013-advance-20261024-r03-finite-markov-chain-0040

Original question and givens

Use one fixed finite time-homogeneous transition table=[[15/17, 2/17], [8/9, 1/9]]. Rows denote the current state and columns the next state; row entries must be nonnegative and sum exactly to 1 before stepping. State order stays fixed. Use exact rational arithmetic, reduce fractions to positive denominators and omit /1 for integer outputs. No stationary, irreducibility, ergodicity or long-term convergence claim follows. Require a qualified kernel and initial law=[15/16, 1/16] with nonnegative entries and exact total 1. Give (initial law,transition table,next law), where next[j]=sum_i initial[i]*P[i][j].

  • G001 — Use one fixed finite time-homogeneous transition table=[[15/17, 2/17], [8/9, 1/9]]. Rows denote the current state and columns the next state; row entries must be nonnegative and sum exactly to 1 before stepping. State order stays fixed. Use exact rational arithmetic, reduce fractions to positive denominators and omit /1 for integer outputs. No stationary, irreducibility, ergodicity or long-term convergence claim follows. Require a qualified kernel and initial law=[15/16, 1/16] with nonnegative entries and exact total 1. Give (initial law,transition table,next law), where next[j]=sum_i initial[i]*P[i][j].

Definition and scope

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.

Step-by-step derivation

S001 · implies

Before

transition row0:raw rational pairs=[[15, 17], [2, 17]]

After

transition row0:normalized=[15/17, 2/17]

Conditions: none

Every original denominator must be nonzero.Reduce fractions to positive denominators without decimal approximation.

Step identifiers and dependencies

Rule: exact_weight_normalization · Uses: G001

S002 · calculation

Before

transition row0 total := sum(15/17, 2/17)

After

transition row0 total = 1

Conditions: none

Compute exactly with this step's specified roles,retaining signs,denominators and original pairings.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S001

S003 · implies

Before

transition row0:weights=[15/17, 2/17];sum=1

After

nonnegative=Yes;total_one=Yes;qualified=Yes

Conditions: none

Check nonnegativity and exact total one separately.Zero weights are allowed;negative weights or near-one totals are not repaired.

Step identifiers and dependencies

Rule: separate_weight_guards · Uses: G001, S002

S004 · implies

Before

transition row1:raw rational pairs=[[8, 9], [1, 9]]

After

transition row1:normalized=[8/9, 1/9]

Conditions: none

Every original denominator must be nonzero.Reduce fractions to positive denominators without decimal approximation.

Step identifiers and dependencies

Rule: exact_weight_normalization · Uses: G001, S003

S005 · calculation

Before

transition row1 total := sum(8/9, 1/9)

After

transition row1 total = 1

Conditions: none

Compute exactly with this step's specified roles,retaining signs,denominators and original pairings.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S004

S006 · implies

Before

transition row1:weights=[8/9, 1/9];sum=1

After

nonnegative=Yes;total_one=Yes;qualified=Yes

Conditions: none

Check nonnegativity and exact total one separately.Zero weights are allowed;negative weights or near-one totals are not repaired.

Step identifiers and dependencies

Rule: separate_weight_guards · Uses: G001, S005

S007 · implies

Before

complete transition matrix=[[15/17, 2/17], [8/9, 1/9]];row sums=[1, 1]

After

nonnegative=Yes;row_stochastic=Yes;rows=current state, columns=next state

Conditions: none

Every complete row must be nonnegative with exact sum1;column sums are not the convention.This fixed time-homogeneous Markov model gives no stationary,ergodic or long-term convergence theorem.

Step identifiers and dependencies

Rule: whole_row_stochastic_kernel_convention · Uses: G001, S006

S008 · implies

Before

initial law:raw rational pairs=[[15, 16], [1, 16]]

After

initial law:normalized=[15/16, 1/16]

Conditions: none

Every original denominator must be nonzero.Reduce fractions to positive denominators without decimal approximation.

Step identifiers and dependencies

Rule: exact_weight_normalization · Uses: G001, S007

S009 · calculation

Before

initial law total := sum(15/16, 1/16)

After

initial law total = 1

Conditions: none

Compute exactly with this step's specified roles,retaining signs,denominators and original pairings.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S008

S010 · implies

Before

initial law:weights=[15/16, 1/16];sum=1

After

nonnegative=Yes;total_one=Yes;qualified=Yes

Conditions: none

Check nonnegativity and exact total one separately.Zero weights are allowed;negative weights or near-one totals are not repaired.

Step identifiers and dependencies

Rule: separate_weight_guards · Uses: G001, S009

S011 · implies

Before

initial row law=[15/16, 1/16];transition=[[15/17, 2/17], [8/9, 1/9]]

After

next[j]=sum_i initial[i]*P[i][j] over every current state

Conditions: none

Partition by current state and use total probability.The initial row law multiplies P on the right;do not transpose or assume a uniform law.

Step identifiers and dependencies

Rule: markov_total_probability_current_to_next · Uses: G001, S010

S012 · calculation

Before

next state0 current0 term := mul(15/16, 15/17)

After

next state0 current0 term = 225/272

Conditions: none

Compute exactly with this step's specified roles,retaining signs,denominators and original pairings.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S011

S013 · calculation

Before

next state0 current1 term := mul(1/16, 8/9)

After

next state0 current1 term = 1/18

Conditions: none

Compute exactly with this step's specified roles,retaining signs,denominators and original pairings.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S012

S014 · calculation

Before

next state0 total := sum(225/272, 1/18)

After

next state0 total = 2161/2448

Conditions: none

Compute exactly with this step's specified roles,retaining signs,denominators and original pairings.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S013

S015 · calculation

Before

next state1 current0 term := mul(15/16, 2/17)

After

next state1 current0 term = 15/136

Conditions: none

Compute exactly with this step's specified roles,retaining signs,denominators and original pairings.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S014

S016 · calculation

Before

next state1 current1 term := mul(1/16, 1/9)

After

next state1 current1 term = 1/144

Conditions: none

Compute exactly with this step's specified roles,retaining signs,denominators and original pairings.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S015

S017 · calculation

Before

next state1 total := sum(15/136, 1/144)

After

next state1 total = 287/2448

Conditions: none

Compute exactly with this step's specified roles,retaining signs,denominators and original pairings.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S016

Reverse checks

  • S017 · premise_and_result_audit — Recompute next state1 total with exact rational arithmetic, not rounded decimals.
  • S016 · premise_and_result_audit — Recompute next state1 current1 term with exact rational arithmetic, not rounded decimals.
  • S015 · premise_and_result_audit — Recompute next state1 current0 term with exact rational arithmetic, not rounded decimals.
  • S014 · premise_and_result_audit — Recompute next state0 total with exact rational arithmetic, not rounded decimals.
  • S013 · premise_and_result_audit — Recompute next state0 current1 term with exact rational arithmetic, not rounded decimals.
  • S012 · premise_and_result_audit — Recompute next state0 current0 term 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 — Recompute initial law total with exact rational arithmetic, not rounded decimals.
  • 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 — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S005 · premise_and_result_audit — Recompute transition row1 total 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 — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S002 · premise_and_result_audit — Recompute transition row0 total with exact rational arithmetic, not rounded decimals.
  • S001 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.

Result

([15/16, 1/16], [[15/17, 2/17], [8/9, 1/9]], [2161/2448, 287/2448])

The full substitutions and premise checks give the original answer; source identity,format and status are unchanged.

This question review and source binding

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.

Source hashes and review receipts
  • input commit: 0f7be61e2c22317a4075561dc822c87d881a50db
  • original question SHA-256: 980874391226d5c0128731674ad2c64c50f9df4ad4a4d123ffd3bf8a027030df
  • candidate record SHA-256: 068604a98de664ebefc1949ecfcb35d3826d59b92f34eda47cf8de27f55ef03d
  • semantic review receipt SHA-256: 47d23d3735987d68e27733b051bdfa80a3616d44fb223b82bf2e6c8e46d49258
  • question-first witness SHA-256: a857db558000724020d2d5e815cb6bc3e2c9e2933df295bf33eb478d3c695139
  • Lean: NOT_RUN · human review: NOT_PERFORMED
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