:orphan:
# MATSUBMATRIX
"submatrix" - A matrix type that represents a virtual submatrix of a matrix 


## Developer Note
The `MatType` is `MATSUBMATRIX` but the routines associated have `SubMatrixVirtual` in them, the `MatType` name should likely be changed to
`MATSUBMATRIXVIRTUAL`


## See Also
 [](ch_matrices), `Mat`, `MatCreateSubMatrixVirtual()`, `MatCreateSubMatrixVirtual()`, `MatCreateSubMatrix()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/impls/submat/submat.c.html#MATSUBMATRIX">src/mat/impls/submat/submat.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/mat/impls/submat/submat.c)


[Index of all Mat routines](index.md)  
[Table of Contents for all manual pages](/manualpages/index.md)  
[Index of all manual pages](/manualpages/singleindex.md)