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...

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Bibliographic Details
Main Authors: Dawar, A, Jakl, T, Reggio, L
Format: Conference item
Language:English
Published: IEEE 2021