On the diamenter of Lascar strong types (after Ludomir Newelski)

Domenico Zambella

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arXiv · 1605.00218

On the diamenter of Lascar strong types (after Ludomir Newelski)

Domenico Zambella

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Abstract

This is an exposition a theorem of mathematical logic which only assumes the notions of structure, elementary equivalence, and compactness (saturation). Newelski proved that type-definable Lascar strong types have finite diameter. Our exposition is based on a proof that appears in Pelaez' thesis - up to a minor difference: the notion of weak c-free is replaced with the notion of non-drifting that is introduced here.

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Domenico Zambella. 2016-05-01. On the diamenter of Lascar strong types (after Ludomir Newelski). https://arxiv.org/abs/1605.00218

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