EE1
compare
b. 21
The dim. marking, placed between the arms of the in FE almost certainly corresponds to the notation of Chopin in [A]. Both in GE and EE the revisers placed it separately, over the hairpin.
Compare the passage in the sources »
category imprint: Differences between sources; Source & stylistic information
issues: EE revisions, GE revisions
notation: Articulation, Accents, Hairpins