document.write("«&nbsp;<a href='/news/view?id=86813'>Constant Slope Models and Perturbation. (arXiv:1801.08356v1 [math.DS])</a>");document.write(" | ");document.write("<a href='/news/view?id=86815'>Contravariance through enrichment. (arXiv:1606.05058v2 [math.CT] UPDATED)</a>&nbsp;»");