:orphan:
# MatCreateNormalHermitian
Creates a new matrix object `MATNORMALHERMITIAN` that behaves like (A*)'*A.
## Synopsis
```
#include "petscmat.h"
PetscErrorCode MatCreateNormalHermitian(Mat A, Mat *N)
```
Collective
## Input Parameter
- ***A -*** the (possibly rectangular complex) matrix
## Output Parameter
- ***N -*** the matrix that represents (A*)'*A
## Note
The product (A*)'*A is NOT actually formed! Rather the new matrix
object performs the matrix-vector product, `MatMult()`, by first multiplying by
A and then (A*)'
## See Also
[](ch_matrices), `Mat`, `MATNORMAL`, `MATNORMALHERMITIAN`, `MatNormalHermitianGetMat()`
## Level
intermediate
## Location
src/mat/impls/normal/normmh.c
## Examples
src/ksp/ksp/tutorials/ex27.c
---
[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/mat/impls/normal/normmh.c)
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