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May 22, 2017 at 10:10 comment added FrankMiller You're right, that's a better way to obtain what I needed... Many thanks!
May 22, 2017 at 6:33 comment added Jochen Wengenroth $G/\mathrm{ker} \varphi_i$ is compact in the quotient topology, $\varphi_i(G)$ is Hausdorff in the relative topology and the bijection from the quotient to the image is continuous. Hence its inverse is continuous, too.
May 21, 2017 at 16:51 history edited YCor CC BY-SA 3.0
changed title and pasted question from MathSE. Added italics to quoted statements.
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May 21, 2017 at 11:46 history asked FrankMiller CC BY-SA 3.0