There are two common indices for scientific productivity: the h-index and the g-index. I have gone up in both these ratings. My h-index is now 13. This means that I have 13 articles each of which has been cited at least 13 times. The Wikipedia entry for the g-index says ” a value for h of about 12 might be typical for advancement to tenure (associate professor) at major research universities.” To put that number in perspective, Sebastian Thrun, a robotics professor at Stanford and developer of the Google Self-Driving Car, has an h-index of 95. So while I am very happy with my 13, it isn’t that great in the scheme of things. My g-index is now 39– I have 39 publications whose combined citations exceed 39 squared. My Erdõs number is 3.