FA-14634 / Numerics / Member archive
Polynomial composition: constant injection · case 04
The exact polynomial composition result violates the stated contract at constant injection.
Case contract
Input [A,B] nonempty ascending integer polynomials; return canonical ascending coefficients A(B(t)), zero represented [0].
Why this case matters
Exact discrete arithmetic with observable algorithmic state; no floating point approximation is used.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| explicit oracle 0 | [0, 0, 0, -1] | [-1, 1, -1] | Failed |
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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.
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