document.write("«&nbsp;<a href='/news/view?id=66973'>Show HN: Badger, 8.5x cheaper, 3.5x faster to run than RocksDB</a>");document.write(" | ");document.write("<a href='/news/view?id=66975'>Smooth invariants of focus-focus singularities and obstructions to product decomposition. (arXiv:1706.07456v1 [math.SG])</a>&nbsp;»");