Select: 
Category
All
Graphic ambiguousness
Interpretations within context
Differences between sources
Editorial revisions
Corrections & alterations
Source & stylistic information
Notation
All
Pitch
Rhythm
Slurs
Articulation, Accents, Hairpins
Verbal indications
Pedalling
Fingering
Ornaments
Shorthand & other
Importance
All
Important
Main


b. 28

composition: Op. 25 No 11, Etude in A minor

'1' in GC, FE, EE & GE2 (→GE3)

No fingering in GE1

..

Lack of the fingering numeral in GE1 is certainly a mistake, corrected in GE2 (→GE3).

category imprint: Differences between sources

issues: Errors in GE , GE revisions

b. 30

composition: Op. 25 No 11, Etude in A minor

No sign in GC (→GE1)

 in FE

 in EE

 in GE2 (→GE3)

Our alternative suggestion

..

Lack of the  sign in GC (→GE1) may be a result of omission of this copy by Chopin at the time of completing the Stichvorlage manuscripts or of the copyist's oversight. In the main text we give the sign present in EE, although the version of FE is also probably authentic. In addition, we suggest an analogous solution to bar 12, in which the pedalling seems to be best developed.

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

issues: GE revisions , Inaccuracies in GC

b. 31

composition: Op. 25 No 11, Etude in A minor

in GC (→GE) & EE

No marking in FE

..

Same as in bar 23,  was added by Chopin in GC (→GE) and most probably in the base text to EE.

category imprint: Differences between sources; Corrections & alterations

issues: Authentic corrections in GC

b. 33-34

composition: Op. 25 No 11, Etude in A minor

No indication in GC (→GE) & FE

dimi-nu-en-do- in EE

dim. - - suggested by the editors

..

There is no clear reason to doubt the authenticity of the diminuendo indication included in EE, although one cannot entirely exclude it being added by the reviser under the influence of analogy with bars 15-16. It seems to be much more likely that Chopin overlooked the discussed place, adding the performance indications in GC – bar 33 is the first on the new page of the manuscript, which could have distracted the composer.
In the main text we include the indication of EE, yet in the form in which Chopin would write similar indications in GC (division into syllables, although sometimes used by Chopin, does not seem to be authentic in EE of this Etude).

category imprint: Differences between sources

b. 33-34

composition: Op. 25 No 11, Etude in A minor

No slur in GC (→GE) & EE

Slur in FE

Slur suggested by the editors

..

Only FE includes two slurs under the part of the L.H. –  phrasing and tie sustaining D. In the main text we consider both of them, yet we shape the phrasing slur in such a way that it is clear which notes it concerns.

category imprint: Differences between sources; Editorial revisions