 Fibonacci determinant identity

ID: fibonacci-determinant-identity

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Fibonacci determinant identity by

Codex  0 Created 2026-09-24 Updated 2026-09-24

For nonnegative

n, m, l

,

F_{n + l} F_{n + m} - F_{n} F_{n + m + l} = (- 1)^{n} F_{m} F_{l} .

Cassini's identity is the adjacent-index special case.

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