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# MATMAIJ
MATMAIJ = "maij" - A matrix type to be used for restriction and interpolation operations for multicomponent problems, interpolating or restricting each component the same way independently. The matrix type is based on `MATSEQAIJ` for sequential matrices, and `MATMPIAIJ` for distributed matrices. 
## Operations provided
```none
    MatMult()
    MatMultTranspose()
    MatMultAdd()
    MatMultTransposeAdd()
```





## See Also
 [](ch_matrices), `Mat`, `MATAIJ`, `MatMAIJGetAIJ()`, `MatMAIJRedimension()`, `MatCreateMAIJ()`

## Level
advanced

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


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