NORM_1 — PETSc 3.25.2 documentation

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# NORM_1

the one norm, \(||v|| = \sum_i | v_i |\). \(||A|| = \max_j || A_{*,j} ||\), maximum column sum

## See Also

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

## Level

beginner

## Location

include/petscvec.h

## Examples

src/ts/tutorials/ex17.c
src/tao/tutorials/ex4.c
src/dm/impls/swarm/tutorials/ex1f90.F90
src/ksp/ksp/tutorials/ex34.c
src/snes/tutorials/ex9.c
src/mat/tutorials/ex3.c
src/tao/constrained/tutorials/tomographyADMM.c
src/ts/tutorials/ex9.c
src/ksp/ksp/tutorials/ex43.c

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