document.write("«&nbsp;<a href='/news/view?id=60141'>On a Nielsen-Thurston classification theory on cluster modular groups. (arXiv:1704.06586v1 [math.GT])</a>");document.write(" | ");document.write("<a href='/news/view?id=60143'>On iteration of Cox rings. (arXiv:1704.06523v1 [math.AG])</a>&nbsp;»");