| P61 | discoverer or inventor | ... | Q451319 (Lev Pontryagin) | Lev Pontryagin |
| P31 | instance of | ... | Q24034552 (mathematical concept) | mathematical concept |
| P138 | named after | ... | Q451319 (Lev Pontryagin) | Lev Pontryagin |
| P279 | subclass of | ... | Q246672 (mathematical object) | mathematical object |
| P2671 | Google Knowledge Graph ID | /g/121914jm |
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