PETSc version 3.17.4
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# MatCreateNormalHermitian

Creates a new matrix object that behaves like (A*)'*A.

### Synopsis

    #include "petscmat.h"
    PetscErrorCode  MatCreateNormalHermitian(Mat A,Mat *N)

Collective on Mat

### Input Parameter

| A | - the (possibly rectangular complex) matrix

### Output Parameter

| N | - the matrix that represents (A*)'*A

### Notes

The product (A*)'*A is NOT actually formed! Rather the new matrix object performs the matrix-vector product by first multiplying by A and then (A*)'

### Level

intermediate

### Location

src/mat/impls/normal/normmh.c

### Examples

src/ksp/ksp/tutorials/ex27.c.html
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