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 | Material from Pontryagin duality was split to Locally compact abelian group on 19 June 2019 from this version. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted so long as the latter page exists. Please leave this template in place to link the article histories and preserve this attribution. The former page's talk page can be accessed at Talk:Pontryagin duality. |