| 0 | 0 | peano commutativity |
| 1 | 0 | mendelson lemma one eight |
| 2 | 0 | mendelson proposition three two a |
| 3 | 0 | mendelson proposition three two b |
| 4 | 0 | mendelson proposition three two c |
| 5 | 0 | mendelson proposition three two d |
| 6 | 0 | mendelson proposition three two f i |
| 7 | 0 | mendelson proposition three two f ii |
| 8 | 0 | mendelson proposition three two f |
| 9 | 0 | mendelson proposition three two g i |
| 10 | 0 | mendelson proposition three two g ii |
| 11 | 0 | mendelson proposition three two g |
| 12 | 0 | mendelson proposition three two h i |
| 13 | 0 | mendelson proposition three two h g ii |
| 14 | 0 | mendelson proposition three two h ii |
| 15 | 0 | mendelson proposition three two h |
| 16 | 0 | mendelson tautology a |
| 17 | 0 | mendelson tautology b |
The pyk compiler, version 0.grue.20050603 by Klaus Grue,