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b. 11-12

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

Wedge in b. 12 in A

2 wedges in GE (→FE,IE)

Wedge in b. 11 in EE

..

In the main text we keep the A version, in which the wedge over the 1st L.H. quaver is written only in bar 12. However, taking into account the similarities between both bars, one can consider the addition introduced by GE (→FE,EE,IE) to be justified, while the version with two wedges an acceptable variant.
The absence of the mark in EE in bar 12 must be a mistake.

category imprint: Differences between sources

issues: Errors in EE , GE revisions

b. 11

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

Slur to g in A

2 shorter slurs in GE (→FE,EE,IE)

..

In the main text we provide the A slur, in this case clearly led to the 3rd beat of the bar. GE (→FE,EE,IE) shortening and doubling the slur, although most probably compliant with the performance intended by Chopin, cannot be authentic. 
Cf. the note on bars 2-4.

category imprint: Differences between sources

issues: Inaccuracies in GE , GE revisions

b. 11

composition: Op. 12, Variations in B♭ major

..

In the main text we include the cautionary  to e2, added in GE2.

category imprint: Differences between sources; Editorial revisions

issues: GE revisions

b. 12

composition: Op. 29, Impromptu in A♭ major

..

We add a cautionary natural next to f2 on the 4th quaver of the bar. The sign was added by someone else in A and put in GE.

category imprint: Differences between sources; Editorial revisions; Corrections & alterations

issues: GE revisions , Foreign hand additions in manuscripts , Cautionary accidentals

b. 12

composition: Op. 29, Impromptu in A♭ major

 
 
..

We add the fingering inscribed by Chopin into FES and FEJ in analogous bar 94.

category imprint: Editorial revisions