 Regular singular point criterion for a second-order equation

ID: regular-singular-point-criterion-for-a-second-order-equation

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

For

y^{''} + P (z) y^{'} + Q (z) y = 0,

z_{0}

(z - z_{0}) P (z)

and

(z - z_{0})^{2} Q (z)

are analytic at

z_{0}

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