# Vectorial PDE, conditions, stiffness matrix

**URL:** <https://community.freefem.org/t/vectorial-pde-conditions-stiffness-matrix/3543>\
**Category:** General Discussion\
**Created:** [October 12, 2024, 12:31pm UTC](https://community.freefem.org/t/vectorial-pde-conditions-stiffness-matrix/3543 "2024-10-12T12:31:06Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![prj](https://avatars.discourse-cdn.com/v4/letter/p/ecae2f/32.png) [@prj](https://community.freefem.org/u/prj)\
**Post date:** [October 14, 2024, 6:40am UTC](https://community.freefem.org/t/vectorial-pde-conditions-stiffness-matrix/3543/3 "2024-10-14T06:40:58Z")

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Also, don’t forget to do a search on the forum before posting, this is a recurring question with many available answers, e.g., [Order of variables in matrix generated with varf with a [P1, P1, P0] fespace](https://community.freefem.org/t/order-of-variables-in-matrix-generated-with-varf-with-a-p1-p1-p0-fespace/3489/1).

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