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Timeline for Cauchy identity for Jack functions

Current License: CC BY-SA 4.0

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May 7, 2023 at 22:54 vote accept Giulio R
May 3, 2023 at 18:20 answer added Giulio R timeline score: 5
May 3, 2023 at 16:39 comment added Jules Lamers Just to include the answer directly here: the LHS of (2) changes to $\sum_\lambda P^{(\alpha)}_\lambda(x) \, P^{(1/\alpha)}_{\lambda'}(y)$ for Jack (and $\sum_\lambda P_\lambda(x;q,t) \, P_{\lambda'}(y;t,q)$ for Macdonald, both) in the monic '$P$-normalisation; the RHS remains the same. This is consistent as $\alpha=1$ gives Schur. This identity appears to have been found independently by Gaudin and Macdonald.
May 3, 2023 at 14:24 comment added Giulio R Thanks! Indeed looking for it, I found it here: kurims.kyoto-u.ac.jp/EMIS/journals/SLC/opapers/s28macdonald.pdf (formula 2.6)
May 3, 2023 at 13:15 comment added Sam Hopkins The second identity you listed is usually called the "dual Cauchy identity." This could help with your searches.
May 3, 2023 at 10:16 history asked Giulio R CC BY-SA 4.0