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Nonlinear Schrödinger equations

Project Description


PyNosh is a solver package for nonlinear Schrödinger equations. It contains the respective model evaluators along with an implementation of Newton’s method and optional preconditioner for its linearization.

PyNosh uses KryPy for the solution of linear equation systems and employs its deflation capabilities. The package VoroPy is used to construct the finite-volume discrezation.



The documentation is hosted at


Absolute value and complex argument of a solution of the Ginzburg-Landau equations, a particular instance of nonlinear Schrödinger equations. The number of nodes in the discretization is 72166 for this example.


PyNosh is currently maintained by Nico Schlömer. Feel free to contact Nico. Please submit feature requests and bugs as GitHub issues.

PyNosh is developed with continuous integration. Current status:


PyNosh is free software licensed under the GPL3 License.

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