document.write("«&nbsp;<a href='/news/view?id=115919'>On $k$-Super Graceful Labeling of Graphs. (arXiv:1807.01203v1 [math.CO])</a>");document.write(" | ");document.write("<a href='/news/view?id=115921'>On Subgroup Topologies on Fundamental Groups. (arXiv:1807.00982v1 [math.AT])</a>&nbsp;»");