This PR was discussed and encountered no objections during the consortium meeting held on 2021-07-29. If further revisions are necessary, they can be addressed in follow-up PRs based on array library implementation feedback.

Hi @kgryte I see this PR merged a while ago, and I can find function via search in array api website, but I don't see either of norms mentioned here:
https://data-apis.org/array-api/latest/API_specification/linear_algebra_functions.html

Hi @arogozhnikov , these functions are part of the Linear Algebra extension module, which you can find at https://data-apis.org/array-api/latest/extensions/linear_algebra_functions.html.

Your link goes to the few linear algebra functions which are deemed fundamental enough to be required in the main namespace (see more about extensions at https://data-apis.org/array-api/latest/extensions/index.html).

thanks @lucascolley, now I get the difference