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arxiv: 1010.0462 · v1 · pith:X7AJYYWSnew · submitted 2010-10-04 · 🧮 math.LO · math.DS

Non-genericity phenomenon in some ordered Fraisse classes

classification 🧮 math.LO math.DS
keywords classeverygrouporderedautomorphismsbijectionsclassesconjugacy
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We show that every two-dimensional class of topological similarity, and hence every diagonal conjugacy class of pairs, is meager in the group of order preserving bijections of the rationals and in the group of automorphisms of the randomly ordered rational Urysohn space.

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