document.write("«&nbsp;<a href='/news/view?id=152500'>[$] LWN.net Weekly Edition for May 23, 2019</a>");document.write(" | ");document.write("<a href='/news/view?id=152504'>$L_2$-cohomology, derivations and quantum Markov semi-groups on $q$-Gaussian algebras. (arXiv:1905.11619v1 [math.OA])</a>&nbsp;»");