Schwarz reflection principle


Also found in: Wikipedia.

Schwarz reflection principle

[′shvärts ri′flek·shən ‚prin·sə·pəl]
(mathematics)
To obtain the analytic continuation of a given function ƒ(z) analytic in a region R, whose boundary contains a segment of the real axis, into a region reflected from R through this segment, one takes the complex conjugate function ƒ(z̄).