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Slurs

b. 1

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

No slur in sources

Slur suggested by the editors

..

It is difficult to assume that Chopin would have wanted to mark the L.H. motifs in bar 1 and 3 differently, hence we consider the absence of the slur in bar 1 to be Chopin's inadvertence.

category imprint: Editorial revisions

b. 2-4

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

Slurs to b in A

Slurs to c1 in GE (→FE,EE,IE)

..

The shorter R.H. slurs in bar 2 and 4 resulted from arbitrary decisions by the GE engraver (→FE,EE,IE), who standardised the slurs concerning the left- and right-hand motifs, which seems justified. However, the A notation is exceptionally precise and consistent, hence we keep it in the main text, although in this context both versions indicate the same performance, according to us.
See also bar 11. 

category imprint: Differences between sources

issues: GE revisions

b. 3

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

Slur to c in A (→GEFE,IE)

No slur in EE1

Slur to d in EE2

..

Both the missing slur in EE1 and the shorter EE2 slur are the engravers' mistakes.

category imprint: Differences between sources

issues: EE revisions , Errors in EE

b. 8-10

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

..

In bars 9-10 EE1 printed the text of bars 8-9 for the L.H. part, devoid of the majority of performance markings (except the  in bar 10). The mistake is serious enough to hamper the reconstruction of the correct text, hence we do not provide the content transcription here. EE2 corrected the defect.

category imprint: Differences between sources

issues: EE revisions , Errors in EE

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