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Mathematical Logic Weekly Seminar
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سمینار هفتگی منطق ریاضی
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TITLE
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Galvins Question on Non-$\sigma$-well Ordered Lines
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SPEAKER
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Hossein Lamei Ramandi
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University of Toronto, Canada
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TIME
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Monday, July 22, 2019,
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14:00 - 16:00
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VENUE |
Lecture Hall 1, Niavaran Bldg.
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SUMMARY |
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Assume $\mathcal{C}$ is the class of all linear orders $L$ such that $L$ is not a countable union of well ordered sets, and every uncountable subset of $L$ contains a copy of $\omega_1$. We show that $\mathcal{C}$ might have minimal elements which answers a question due to Galvin.
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تهران، ضلع جنوبی
ميدان شهيد باهنر (نياوران)، پژوهشگاه
دانشهای بنيادی، پژوهشکده رياضيات
School of
Mathematics, Institute for Research in
Fundamental Sciences (IPM), Niavaran
Bldg., Niavaran Square, Tehran
ipmmath@ipm.ir
♦ +98 21
22290928 ♦
math.ipm.ir |
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