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when toggle format what by license comment
Feb 5, 2023 at 22:14 comment added Gérard Lang Thank you very much.
Feb 5, 2023 at 20:56 comment added Peter Mueller What you are looking for are near-fields, see en.wikipedia.org/wiki/Near-field_(mathematics).
Feb 5, 2023 at 19:44 history asked Gérard Lang CC BY-SA 4.0