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DTSTART:20070311T020000
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DTSTAMP:20260223T095409
DTSTART;TZID=America/Detroit:20260225T143000
DTEND;TZID=America/Detroit:20260225T153000
SUMMARY:Workshop / Seminar:Learning seminar in algebraic combinatorics: Bricks and the Lattice of Torsion Classes
DESCRIPTION:Last week\, Yucong introduced the lattice of torsion classes. This coming week\, we'll examine several properties of the lattice of torsion classes. We'll characterize the completely join irreducible elements and\, time permitting\, prove that the lattice of torsion classes is completely semi-distributive. Underlying both of these properties are \"bricks\"\, a special kind of indecomposable module.
UID:145820-21897850@events.umich.edu
URL:https://events.umich.edu/event/145820
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall - 4088
CONTACT:
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DTSTAMP:20260126T103944
DTSTART;TZID=America/Detroit:20260225T143000
DTEND;TZID=America/Detroit:20260225T155000
SUMMARY:Workshop / Seminar:Who Gets What in Education:  Can School Matching Improve Student Achievement? (with Parag Pathak and Atila Abdulkadiroglu)
DESCRIPTION:We examine two approaches to improving urban school systems: changing who gets to go to existing schools (reallocation) and restructuring school portfolios through closures and reconstitution (resource augmentation). Using data from New York City high schools\, we estimate models of school effects allowing for both vertical school quality differences and horizontal student-specific match effects. While sophisticated reallocation policies that op- timize student-school matches can generate modest educational gains\, they are constrained by limited seats at highly effective schools. Simple resource-augmentation policies targeting replacement of low-performing schools achieve comparable improvements with less systemic disruption. Analysis of NYC’s school closures reveals that basic graduation rate metrics effectively identify struggling schools\, suggesting complex value-added models may be un- necessary for targeting closure decisions. Our findings indicate that capacity constraints\, rather than poor school matching\, primarily drive educational inequality.
UID:143679-21893638@events.umich.edu
URL:https://events.umich.edu/event/143679
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Econometrics,Economics,Labor,seminar
LOCATION:North Quad - 4325
CONTACT:
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