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Timeline for Regarding variation of spectra

Current License: CC BY-SA 4.0

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Mar 27, 2022 at 10:38 history edited MSMalekan CC BY-SA 4.0
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Mar 27, 2022 at 9:49 comment added MSMalekan @user332905 if we consider the norm topology on $A$, the answer is "Yes".
Mar 27, 2022 at 8:14 comment added user332905 So it is basically the set valued spectrum function that is upper semicontinuous. Am I right?
Mar 27, 2022 at 7:17 history answered MSMalekan CC BY-SA 4.0