# Nonlinear PDE + scalar constraint with PETSc?

**URL:** <https://community.freefem.org/t/nonlinear-pde-scalar-constraint-with-petsc/2810>\
**Category:** General Discussion\
**Created:** [November 22, 2023, 8:49pm UTC](https://community.freefem.org/t/nonlinear-pde-scalar-constraint-with-petsc/2810 "2023-11-22T20:49:01Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![cmd](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/cmd/32/67_2.png) [@cmd](https://community.freefem.org/u/cmd)\
**Post date:** [November 23, 2023, 12:41pm UTC](https://community.freefem.org/t/nonlinear-pde-scalar-constraint-with-petsc/2810/2 "2023-11-23T12:41:58Z")

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Hi there! Check out [this thread](https://community.freefem.org/t/snes-for-bordered-block-matrix/2193/16).

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_[View the full topic](https://community.freefem.org/t/nonlinear-pde-scalar-constraint-with-petsc/2810)._