An incorrect proof has felled a math paper. There’s not too much to say in a straightforward situation like this one, which we’ve seen before — the result of honest errors, not any malfeasance.
Here’s the abstract for “Spectral mapping theorem for generalized Kato spectrum:”
In this paper, we give an affirmative answer to Mbekhta’s conjecture (Mbekhta, 1990) about the pseudo Fredholm operators in Hilbert space. As a consequence, we characterize pseudo Fredholm operators and we prove that the generalized Kato spectrum satisfies the spectral mapping theorem in the Hilbert spaces setting.
The paper — published in the Journal of Mathematical Analysis and Applications — has been cited twice, according to Thomson Scientific’s Web of Knowledge.
Here’s the retraction note:
Continue reading Honest errors take down math paper
A common ailment known as duplication has taken down a paper about a common fungus and asthma.
Aspergillus spores are often ubiquitous yet harmless, but can irritate people whose lungs aren’t in top working order. Duplication, on the other hand, is more universally deadly. The editors of The Pan African Medical Journal told us that, in addition to the retraction, there were personal consequences for the authors: Continue reading Journal bans authors of duplicated asthma paper
Physica B: Condensed Matter has retracted a 2013 paper by a group from Morocco and France for, well, inappropriate condensation of printed matter.
The article, “Granular and intergranular conduction in La1.32Sr1.68Mn2O7 layered manganite system,” came mostly from a team of physicists at University Ibn Zohr, and appeared in June.
According to the retraction notice: Continue reading Plagiarism leads to retraction of conduction paper