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Verbal indications

b. 57

composition: Op. 30, Mazurka in D♭ major

in FC (→GE)

No indication in FE (→EE)

..

The absence of  in FE (→EE) could be Chopin's inadvertence (or the engraver's oversight). If this phrase (starting here) were to continue the previous dynamics ( from bar 49), the next  mark in bar 65 would be only a confirmation thereof, while the whole would be devoid of a dynamic contrast, so typical of opus 30, and particularly of this Mazurka. On the other hand, the absence of indications does not mean that one cannot play in a varied manner; it simply leaves the choice of performance details to the performer (to a greater extent). Therefore, the version without  may be considered an acceptable variant.
See also the next note.

category imprint: Differences between sources

b. 75

composition: Op. 30, Mazurka in D♭ major

in FC (→GE)

No indication in FE (→EE)

..

The  and slentando indications were added to FC by Chopin. Therefore, the latter must have been added also either in the stage of proofreading FE or to the basis thereof.

category imprint: Differences between sources; Corrections & alterations

issues: Authentic corrections of FE , Authentic corrections of FC