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DTSTAMP:20240413T124459
DTSTART;TZID=America/Detroit:20240417T143000
DTEND;TZID=America/Detroit:20240417T160000
SUMMARY:Workshop / Seminar:Learning Seminar in Algebraic Combinatorics: Newton-Okounkov bodies
DESCRIPTION:The correspondence between lattice polytopes and divisors on a toric variety is a basic incarnation of a connection that extends far beyond toric varieties. In this talk\, we will give a gentle introduction to Newton-Okounkov bodies\, which provide a correspondence between convex geometry and divisors on a general variety. While Newton-Okounkov bodies are in generally very far from being polyhedral\, we will highlight an important situation in which the Newton-Okounkov body is polyhedral and what consequences this has for the geometry of the associated variety.
UID:121441-21846553@events.umich.edu
URL:https://events.umich.edu/event/121441
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:
LOCATION:East Hall - 4088
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20240410T140621
DTSTART;TZID=America/Detroit:20240417T143000
DTEND;TZID=America/Detroit:20240417T155000
SUMMARY:Workshop / Seminar:The Anatomy of Sorting – Evidence from Danish Data\,” joint w/ Suphanit Piyapromdee and Jean-Marc Robin
DESCRIPTION:In this paper\, we formulate and estimate a flexible model of job mobility and wages with two-sided heterogeneity. The analysis extends the finite mixture approach of Bonhomme et al. (2019) and Abowd et al. (2019) to develop a new Classification Expectation-Maximization algorithm that ensures both worker and firm latent type identification using wage and mobility variations in the data. Workers receive job offers in worker type segmented labor markets. Offers are accepted ac- cording to a logit form that compares the value of the current job with that of the new job. In combination with flexibly estimated layoff and job finding rates\, the analysis quantifies the four different sources of sorting: job preferences\, segmentation\, layoffs\, and job finding. Job preferences are identified through job-to-job moves in a revealed preference argument. They are in the model structurally independent of the identified job wages\, possibly as a reflection of the presence of amenities. We find evidence of a strong pecuniary motive in job preferences. While\, the correlation between preferences and current job wages is positive\, the net present value of the future earnings stream given the current job correlates much more strongly with preferences for it. This is more so for short- than long-tenure workers. In the analysis\, we distinguish between type sorting and wage sorting. Type sorting is quantified by means of the mutual information index. Wage sorting is captured through correlation between identified wage types. While layoffs are less important than the other channels\, we find all channels to contribute substantially to sorting. As workers age\, job arrival processes are the key determinant of wage sorting\, whereas the role of job preferences dictate type sorting. Over the life cycle\, job preferences intensify\, type sorting increases and pecuniary considerations wane.\n\nThis talk is presented by the Labor Economics Seminar\, sponsored in part by the Department of Economics with generous gifts given through the Abraham and Thelma Zwerdling Labor Economics Program.
UID:117982-21840261@events.umich.edu
URL:https://events.umich.edu/event/117982
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Economics,Labor,seminar
LOCATION:Lorch Hall - 201
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20240417T142020
DTSTART;TZID=America/Detroit:20240417T150000
DTEND;TZID=America/Detroit:20240417T180000
SUMMARY:Conference / Symposium:BGSA Event Sign-Ups
DESCRIPTION:
UID:118608-21846376@events.umich.edu
URL:https://events.umich.edu/event/118608
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Sessions
LOCATION:East Conference Room
CONTACT:
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