Inhomogeneous Wirtinger equation with holomorphic forcing

ID: inhomogeneous-wirtinger-equation-with-holomorphic-forcing

Let be a holomorphic function on an open set . Among continuously differentiable functions, all solutions of are
where is an arbitrary holomorphic function on . The Wirtinger derivatives satisfy and , so the product rule verifies the particular solution . Subtracting it from any other solution leaves a continuously differentiable function with vanishing Wirtinger derivative, hence a holomorphic function by the Cauchy-Riemann equations. Conversely adding such a holomorphic function changes no prescribed derivative. For on the complex plane, the solutions are with any entire function.

New to topics? Read the docs here!