Lovasz-type theorems and game comonads
Lovász (1967) showed that two finite relational structures A and B are isomorphic if, and only if, the number of homomorphisms from C to A is the same as the number of homomorphisms from C to B for any finite structure C. Soon after, Pultr (1973) proved a categorical generalisation of this fact. We...
| Main Authors: | , , |
|---|---|
| 格式: | Conference item |
| 语言: | English |
| 出版: |
IEEE
2021
|