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Question 1726: Classify the Nonnegative Factor, Not Every Orbit’s Monotonicity

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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R0002-01726 · q-20261013-advance-20261020-r06-discrete-exponential-growth-0076

Original question and givens

Use fixed discrete time steps and one exact nonnegative rational factor throughout. This is not a continuous-time model or an empirical population prediction; signed initial quantities and the zero case must retain their specified values. factor=0/1. Give (normalized factor, one label: factor greater than 1 / factor equals 1 / factor at least 0 and below 1). The last case includes factor 0. A zero initial value remains zero, and signed initial data do not all increase when the factor exceeds 1.

  • G001 — Use fixed discrete time steps and one exact nonnegative rational factor throughout. This is not a continuous-time model or an empirical population prediction; signed initial quantities and the zero case must retain their specified values. factor=0/1. Give (normalized factor, one label: factor greater than 1 / factor equals 1 / factor at least 0 and below 1). The last case includes factor 0. A zero initial value remains zero, and signed initial data do not all increase when the factor exceeds 1.

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

factor q=0≥0

After

X_(k+1)=q·X_k

Conditions: none

Use the same factor in the declared discrete model,rather than infer a general law from a few values.

Step identifiers and dependencies

Rule: fixed_factor_recurrence · Uses: G001

S002 · implies

Before

q=0

After

compare q with1: q−1=-1

Conditions: none

Compare exactly with1;the name alone does not imply growth.

Step identifiers and dependencies

Rule: factor_threshold · Uses: G001, S001

S003 · implies

Before

qualified interval: 0≤q<1

After

preserved source label=factor between 0 and 1

Conditions: none

Retain the source label while making explicit that this contract's low-factor branch includes q=0,not just0<q.

Step identifiers and dependencies

Rule: qualified_factor_label · Uses: G001, S002

S004 · implies

Before

q=0 sends every state to0 after one update

After

q=1 preserves each state; q>1 need not increase a negative initial value

Conditions: none

Factor classification is not a claim that every initial value increases;distinguish zero or negative initial values and a zero factor.

Step identifiers and dependencies

Rule: factor_not_signed_monotonicity · Uses: G001, S003

Reverse checks

  • 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 — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S001 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.

Result

(0, factor at least 0 and below 1)

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: 860e9a9f3582025c34336758450e500fc402db57d657e3321c49ce2b4c2b7bbc
  • candidate record SHA-256: 46f3ba8d3e7cc6b0ca688d5469baf02c569ca6bbd479fd5309a35d3cba2e6338
  • semantic review receipt SHA-256: 340d74dcc6e37df6249594a0b79a9ee2af804337b7847478b3c1342af9722861
  • question-first witness SHA-256: 9a06233d190d31a16f13fb03b6c3ceba4cbb748fff6c997941f66ab1888dcca8
  • Lean: NOT_RUN · human review: NOT_PERFORMED
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