mUltimate Chopin

Op. 28 No. 15, Prelude in D♭ major

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b. 41-43

composition: Op. 28 No. 15, Prelude in D♭ major

Slur to bar 43 in A (→FE→EE)

Slur in bars 40-41 in FC (→GE)
..

The copyist did not finish the phrase mark in b. 42-43, which open a new line.

category imprint: Differences between sources

issues: Errors of FC

b. 43

composition: Op. 28 No. 15, Prelude in D♭ major

 under 3rd quaver  in A (→FC→GE)

No marking in FE (→EE1)

on 2nd quaver in EE2
..

The missing  indication in FE (→EE1) must be the engraver's oversight. Dynamic gradation is undoubtedly an integral part of the 16-bar section that ends here; as a result, the dynamics of the beginning of its repetition should be tantamount to sotto voce in b. 28. It is also confirmed by  present in the next bar in FED.

In EE2 the indication was probably repeated after GE. Moving it a quaver earlier was an arbitrary decision; however, it may comply with Chopin's intention, since he would sometimes place markings within the range of their scope, and not at the beginning.  

category imprint: Differences between sources

issues: EE revisions , Errors in FE

b. 44-46

composition: Op. 28 No. 15, Prelude in D♭ major

..

In A (→FC) b. 44-58 are written down as empty bars, numbered from 1 to 15, which means that b. 28-42, numbered the same, should be repeated.

category imprint: Source & stylistic information

issues: Abbreviated notation of A

b. 44

composition: Op. 28 No. 15, Prelude in D♭ major

No indication in A (→FC→GE, →FE→EE)

in FED

(), our variant suggestion
..

 added by Chopin in FED confirms that the absence of  in the preceding bar in FE was an oversight of the engraver. According to us, both indications, although neither of the sources contains both at the same time, are not mutually exclusive; what is more, they could be considered complementary. Therefore, in the main text we include the addition of FED in a variant form. 

category imprint: Differences between sources

issues: Annotations in teaching copies , Annotations in FED

b. 44-46

composition: Op. 28 No. 15, Prelude in D♭ major

No slur in A, literal reading

Slur in A, contextual interpretation (→FC→GE, →FE→EE)
..

Although these bars (as well as the subsequent ones, until b. 58) are not written out with notes in A (→FC), Chopin provided them with a R.H. phrase mark. In turn, in the L.H. part a respective phrase mark starts in A only just in b. 48, which suggests that either b. 44-47 are supposed to be devoid of a phrase mark or that they should contain the same slurring as in b. 28-31. According to us, it is the latter that is correct, which was implemented in FE (→EE).
In FC, which does not contain a L.H. phrase mark in signalized b. 44-58 at all, the text is unequivocal – the slurring from b. 28-42 should be repeated, as it was interpreted in GE.  

category imprint: Interpretations within context; Differences between sources

issues: Errors of A