document.write("«&nbsp;<a href='/news/view?id=83558'>Covering the recursive sets. (arXiv:1712.05875v1 [math.LO])</a>");document.write(" | ");document.write("<a href='/news/view?id=83560'>Curves with low Harbourne constants on Kummer and Abelian surfaces. (arXiv:1711.06449v2 [math.AG] UPDATED)</a>&nbsp;»");