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| PhD | This user has a Doctor of Philosophy degree in Mathematical logic. |
 | This user has published peer-reviewed articles in academic journals. |
 | This user thinks that registration should be required to edit articles. |
| This user has been on Wikipedia for 18 years, 5 months and 8 days. |
| PhD | This user has a Doctor of Philosophy degree in Mathematical logic. |
| This user has published peer-reviewed articles in academic journals. |
| This user thinks that registration should be required to edit articles. |
