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In Ref. [1] the BESIII collaboration published a cross section measurement of the process e+e− → π+π− in the energy range between 600 and 900 MeV. In this corrigendum, we report a corrected evaluation of the statistical errors in terms of a fully propagated covariance matrix. The correction also yields a reduced statistical uncertainty for the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon, which now reads as aππ,LO μ (600 − 900 MeV) = (368.2 ± 1.5stat ± 3.3syst) × 10−10. The central values of the cross section measurement and of aππ,LO μ , as well as the systematic uncertainties remain unchanged.
In Jaeger (to appear) I have described clitic doubling in Bulgarian wh-interrogatives which constitutes a type of Superiority violation that cannot be accounted for by any existing analyses. By showing that clitic doubling of object wh-phrases marks topicality, I raised the hypothesis that many (or maybe all) so called Superiority effects in Bulgarian are due to topic-fronting of wh-phrases. Here, I provide further support for this hypothesis and show that there is also evidence for topic-fronting of non-object wh-phrases. Differences between colloquial and formal Bulgarian are restricted to how topical objects have to be realized at the source of the extraction (i.e. the VP), which also makes the account readily extendable to other multiple fronting languages. The complex ordering constraints on the left periphery are captured in a Linear Syntax approach (similar to but different from Kathol 2000).