 I contributed to a proof |  I contributed a mathematical statement (proposition, lemma, theorem or corollary). |  I contributed to a definition. |  I contributed to an axiom. |
| I contributed a new example. | I contributed a new explanation. | I contributed a new application. | I contributed a new interpretation or provided a new motivation to a topic. |
| I'm a (co-)author of a mathematician profile. | I'm a (co-)author of a historical note. | I contributed to at least 3 different profiles of mathematicians. | |
| I contributed to at least 1 bibliography entry. | I contributed to at least 10 bibliography entries. | I contributed to at least 25 bibliography entries. | I contributed to at least 50 bibliography entries. |
| I created my public profile. | My profile has been viewed at least 10 times. | My profile has been viewed at least 100 times. | |
| I accepted at least 10 postings of other users. | I rejected at least 3 postings of other users and was right! | I accepted at least 40 postings of other users. | I rejected at least 9 postings of other users and was right! |
