Talk:Proper frame

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Symbol 𝜕 edit

Latest comment: 9 months ago1 comment1 person in discussion

This symbol is suddenly introduced in this page, within a sentence that seems somewhat disconnected with what precedes and rather unclear. Is it possibile that there’s a missing paragraph where 𝜕 is more properly defined? 104.175.224.156 (talk) 13:20, 5 August 2023 (UTC)Reply

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