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Integer matrix binary power: binary exponent advancement · case 04
The exact integer matrix binary power result violates the stated contract at binary exponent advancement.
Case contract
Input [square integer matrix,nonnegative exponent<=12]; return exact matrix power.
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 | [[4398046511104]] | [[64]] | Failed |
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