Timeline for Equality of subsets of abelian groups
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 16, 2022 at 1:34 | vote | accept | user53093 | ||
| Jan 14, 2022 at 5:44 | comment | added | user53093 | Dear Absol and LSpice, Thank you for your answers. | |
| Jan 14, 2022 at 5:35 | vote | accept | user53093 | ||
| Jan 16, 2022 at 1:30 | |||||
| Jan 14, 2022 at 2:11 | comment | added | LSpice | Just so that it is here in the answers, I would like to elaborate on my terse comment by making sure that the phrase "Fourier inversion" appears here. Concretely, $\lvert G\rvert^{-1}\sum_\chi \chi(g)^{-1}\sum_{x \in X} \chi(x)$ is $1$ if $g$ belongs to $X$ and $0$ otherwise (and, in general, if $X$ is a multiset, then the sum counts the multiplicity of $g$ in $X$, as @GeraldEdgar mentioned). | |
| Jan 14, 2022 at 2:08 | history | edited | LSpice | CC BY-SA 4.0 |
`\DeclareMathOperator`, and light proofreading
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| S Jan 14, 2022 at 2:06 | review | First answers | |||
| Jan 14, 2022 at 3:01 | |||||
| S Jan 14, 2022 at 2:06 | history | answered | Absol | CC BY-SA 4.0 |