maths: add O(log n) Fibonacci via matrix exponentiation#14557

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AKIB473 wants to merge 4 commits intoTheAlgorithms:masterfrom

AKIB473:akib/fibonacci-fast

Commits on Apr 14, 2026

maths: add O(log n) Fibonacci via matrix exponentiation
Akibuzzaman Akib
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style: fix ruff linting — replace ambiguous multiplication sign, apply formatting
Akibuzzaman Akib
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Commits on Apr 15, 2026

fix: use descriptive parameter names (mat_a, mat_b, index) per review
AKIB473
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[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot]
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