========================================= Documentation for previous PETSc releases ========================================= .. toctree:: :maxdepth: 1 3.21 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.21/docs> 3.20 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.20/docs> 3.19 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.19/docs> 3.18 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.18/docs> 3.17 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.17/docs> 3.16 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.16/docs> 3.15 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.15/docs> 3.14 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.14/docs> 3.13 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.13/docs> 3.12 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.12/docs> 3.11 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.11/docs> 3.10 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.10/docs> 3.9 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.9/docs> 3.8 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.8/docs> 3.7 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.7/docs> 3.6 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.6/docs> 3.5 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.5/docs> 3.4 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.4/docs> 3.3 <https://web.cels.anl.gov/projects/petsc/vault/petsc-3.3/docs>