Issues : Errors in GE

b. 42-43

composition: Op. 10 No 12, Etude in C minor

Slur in A, interpretation

Tie in FE (→EE)

No sign in GE

..

In A the slur running from the g1-g2 octave is written only in bar 42 (at the end of the text's line). This inaccuracy probably caused its misinterpretation in FE (→EE) as a tie sustaining g2. In GE the slur was omitted, which, among others, may be a simple oversight. 

category imprint: Differences between sources

issues: Inaccuracies in FE , Inaccurate slurs in A , Errors in GE , GE revisions

b. 43-45

composition: Op. 10 No 12, Etude in C minor

 in A

Two  in FE (→GE1GE2, →EE)

One  in GE3 (→GE4)

category imprint: Differences between sources

issues: Inaccuracies in FE , Errors in GE , GE revisions , Authentic corrections of FE

b. 56

composition: Op. 10 No 12, Etude in C minor

c2 in A (→FEEE,GE1GE2)

d2 in GE3 (→GE4)

..

The d2 note in the 1st chord is most probably a result of a mistake of the engraver of GE3 (→GE4).
The  added before c2 in FE (→GE1,EE) also seems to be a mistake.

category imprint: Differences between sources

issues: Errors in GE

b. 70

composition: Op. 10 No 12, Etude in C minor

Semibreve d2 in A (→FEEE,GE1GE2)

Minim d2 in GE3 (→GE4)

..

It is hard to determine with certainty if placing d2 on one stem with the g1 minim in GE3 (→GE4) was an intentional action or a mistake.

category imprint: Differences between sources

issues: Errors in GE , GE revisions