| 释义 |
Laurent expansion Laurent expansion[lȯ′rän ik‚span·chən] (mathematics) An infinite series in which an analytic function ƒ(z) defined on an annulus about the point z0 may be expanded, with n th term an (z - z0) n , n ranging from -∞ to ∞, and an = 1/(2π i) times the integral of ƒ(t)/ (t-z0) n +1along a simple closed curve interior to the annulus. Also known as Laurent series. |