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# NORM_FROBENIUS

\(||A|| = \sqrt{\sum_{i,j} |A_{i,j}|^2}\), same as `NORM_2` for vectors

## See Also

Vectors and Parallel Data, `NormType`, `MatNorm()`, `VecNorm()`, `VecNormBegin()`, `VecNormEnd()`, `NORM_1`, `NORM_2`, `NORM_INFINITY`, `NORM_1_AND_2`

## Level

beginner

## Location

include/petscvec.h

## Examples

src/ml/da/tutorials/ex2.c
src/snes/tutorials/ex48.c
src/ksp/ksp/tutorials/ex34.c
src/ksp/ksp/tutorials/ex21.c
src/ts/tutorials/ex14.c
src/ksp/ksp/tutorials/ex29.c

Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages