Groupoids, imaginaries and internal covers
Let $T$ be a first-order theory. A correspondence is established between internal covers of models of $T$ and definable groupoids within $T$. We also consider amalgamations of independent diagrams of algebraically closed substructures, and find strong relation between: covers, uniqueness for 3-amalg...
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| Формат: | Journal article |
| Хэвлэсэн: |
2011
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