# Does linfty give maximum norm?

**URL:** <https://community.freefem.org/t/does-linfty-give-maximum-norm/142>\
**Category:** General Discussion\
**Created:** [September 27, 2019, 7:23pm UTC](https://community.freefem.org/t/does-linfty-give-maximum-norm/142 "2019-09-27T19:23:27Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![linwaytin](https://avatars.discourse-cdn.com/v4/letter/l/898d66/32.png) [@linwaytin](https://community.freefem.org/u/linwaytin)\
**Post date:** [September 27, 2019, 7:23pm UTC](https://community.freefem.org/t/does-linfty-give-maximum-norm/142/1 "2019-09-27T19:23:27Z")

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Hi,

I noticed there is property of an array called linfty.  
It seems that this property gives maximum norm of an array.  
Is this right? I cannot find documentation for this property.

Thank you.

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**Author:** ![AFourmont](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/afourmont/32/56_2.png) [@AFourmont](https://community.freefem.org/u/AFourmont)\
**Post date:** [October 1, 2019, 11:30am UTC](https://community.freefem.org/t/does-linfty-give-maximum-norm/142/2 "2019-10-01T11:30:46Z")

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You have right, it’s the infinite norm

Axel

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<div class="post-metadata">

**Author:** ![linwaytin](https://avatars.discourse-cdn.com/v4/letter/l/898d66/32.png) [@linwaytin](https://community.freefem.org/u/linwaytin)\
**Post date:** [October 1, 2019, 1:30pm UTC](https://community.freefem.org/t/does-linfty-give-maximum-norm/142/3 "2019-10-01T13:30:02Z")

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Thank you for answering my question.