Issues : Accidentals in different octaves

b. 7

composition: Op. 25 No 2, Etude in F minor

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AT, AW and CDP do not have here the  before the 5th (e2) quaver. In AW and CDP, the inaccuracy is also in bar 26, while in CDP also in bar 57. 

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , Errors of A , Errors of CDP

b. 7-15

composition: Op. 63 No. 1, Mazurka in B major

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In bars 7 and 15 the sources do not contain sharps over the mordents. There are no doubts as to the sound of the top note, while the notation is inaccurate, as usual in such situations in Chopin's works (in bar 7 it concerns only AI and GE3 due to the misplaced  mark in the remaining sources). In the versions 'edited text' and in the main text we add the absent accidentals.
There is a similar situation in bar 75.

category imprint: Interpretations within context

issues: Errors in FE , Accidentals in different octaves , GE revisions , Errors repeated in GE , Errors repeated in EE

b. 8

composition: Op. 28 No. 16, Prelude in B♭ minor

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In A (→FC,FE) there is no  before the 2nd semiquaver in the 2nd half of the bar (a2). The patent inaccuracy was corrected in GE and EE.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Accidentals in different octaves , GE revisions , Inaccuracies in A , Errors repeated in FE

b. 8

composition: Op. 28 No. 18, Prelude in F minor

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In A (→FE), Chopin wrote only a  restoring e2 (in the R.H. part). The corresponding sign in the L.H. part was added in FC (→GE) and EE.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Accidentals in different octaves , Fontana's revisions , Inaccuracies in A , Errors repeated in FE

b. 9

composition: Op. 28 No. 3, Prelude in G major

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In A (→FE1) there is no  raising c1 to c1 at the beginning of the 2nd group of semiquavers. That patent oversight of Chopin was corrected by Fontana in FC (→GE) and FE2 (EE). The accidental is also in FCI.

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , FE revisions , Fontana's revisions , Inaccuracies in A , Errors repeated in FE