I must admit, I use WFR :) And agree re: Christian's surveys, I am already noticing how much more I learn each time through! Thanks again for the pointer, this was super helpful

Actually Léonard 2010 Thm. 4.1 appears to provide the result arxiv.org/pdf/1011.2564.pdf

Thanks! also love your work on Kantorovich-Fisher-Rao :) I was aware of the survey, but now notice the relevant parts and see the example $c(v_t) = \|v\|^m$ in arxiv.org/pdf/1011.2564.pdf. Will brush up on LD theory and try for others as well, unless a solution is obvious

Some favorite papers: Renyi α: arxiv.org/abs/2107.11925 (or TK Wong's previous work) Amari α: lsa.umich.edu/psych/junz/Publication/…

Thank you! I was wondering how the log would appear in one and not the other