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b. 38

composition: (Op. 4), Sonata in C minor, Mvt III

a in A, literal reading

a in A (contextual interpretation→GEFE,EE,IE)

..

The missing  raising a to a is almost certainly Chopin's oversight – in the entire A accidentals are generally valid in all octaves (cf. bar 10 and dozens of examples in mov. I and IV). The accidental was added in GE (→FE,EE,IE).

category imprint: Interpretations within context; Differences between sources

issues: GE revisions

b. 39

composition: (Op. 4), Sonata in C minor, Mvt III

..

The (cautionary?) flat to b added in GE (→FE,EE,IE) is almost certainly a mistake – there is no musical justification for it. According to us, the GE engraver could have taken the digit 3 for a , as in A the digit was inserted in a place in which one could expect an accidental. In the main text we omit it.

category imprint: Differences between sources

issues: GE revisions

b. 39

composition: (Op. 4), Sonata in C minor, Mvt III

..

In the main text we add a cautionary  to A

category imprint: Editorial revisions

b. 40

composition: (Op. 4), Sonata in C minor, Mvt III

d in A (literal reading→GEEE,IE)

d in A (contextual interpretation) & FE

..

According to us, leaving the third semiquaver from the end without an accidental, which results in d, is Chopin's mistake. It is true that e on the last semiquaver could be regarded as a resolution of this d note; however, it would require a particular performance, marked with a respective indication, e.g.:  . Nevertheless, even when performed as such, this version does not fit with the smorzando and the ongoing tensions' release; moreover, this version unnecessarily anticipates a much nobler effect used by Chopin in the next bar.
The flat restoring d was added only in FE.

category imprint: Differences between sources; Editorial revisions

issues: Omissions to cancel alteration , Errors of A , FE revisions , Errors repeated in GE , Errors repeated in EE , Errors repeated in IE