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DTSTART;TZID=America/New_York:20260415T150000
DTEND;TZID=America/New_York:20260415T160000
DTSTAMP:20260409T091255
CREATED:20260403T170808Z
LAST-MODIFIED:20260409T130801Z
UID:10007953-1776265200-1776268800@umaine.edu
SUMMARY:Mathematics Colloquium
DESCRIPTION:MAT Colloquium\nWednesday\, April 15\, 2026\nHill Auditorium\, Barrows Hall\nRefreshments at 3:00pm\, Talk 3:15-4:05pm \nSpeaker: Jack Buttcane\, University of Maine \nAbstract: \nRotations in three dimensions depend on three angles\, which we call the Euler angles. A function of the Euler angles can be expressed in terms of Wigner-D matrices\, which are representations of the rotation group SO(3). These matrix functions are strongly tied to quantum mechanics where they measure the probability of a state transition under a rotation\, but as a number theorist\, I am interested in their connection to automorphic forms: Suppose we have a vector-valued function of the 3×3 invertible matrices that transforms by a Wigner-D matrix under rotations. Then an interesting quantity to study is the “sup norm” sup_A ||f(A)||\, i.e. the maximum value of the length of the vector f(A) over 3×3 invertible matrices A. \nWe can also think of the function f as a vector of scalar-valued functions f=(f_{-d}\,…f_d) and for each entry f_j in the vector\, we can consider sup_A |f_j(A)|. The question I want to consider is\, to what extent does the ratio of these two sup norms depend exclusively on the Wigner-D matrix\, independent of the particular function f? As an undergraduate summer research project Andrii Obertas did some computations on this project and I’ll report on the outcome of those\, as well.
URL:https://umaine.edu/calendar/event/mathematics-colloquium/
LOCATION:Barrows Hall\, University of Maine\, Orono\, ME\, 04469\, United States
CATEGORIES:Lectures & Seminars
ORGANIZER;CN="Department of Mathematics & Statistics":MAILTO:mathstats@maine.edu
GEO:44.897732;-68.6687076
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DTSTART;TZID=America/New_York:20260422T150000
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DTSTAMP:20260409T091255
CREATED:20260403T171036Z
LAST-MODIFIED:20260403T171036Z
UID:10007956-1776870000-1776873600@umaine.edu
SUMMARY:Mathematics Colloquium
DESCRIPTION:MAT Colloquium\nWednesday\, April 22\, 2026 \nHill Auditorium\, Barrows Hall\nRefreshments at 3:00pm\, Talk 3:15-4:05pm \nSpeaker: Yagmur Yilmaz\, University of Maine \nAbstract: TBA\, more information to come
URL:https://umaine.edu/calendar/event/mathematics-colloquium-2/
LOCATION:Barrows Hall\, University of Maine\, Orono\, ME\, 04469\, United States
CATEGORIES:Lectures & Seminars
ORGANIZER;CN="Department of Mathematics & Statistics":MAILTO:mathstats@maine.edu
GEO:44.897732;-68.6687076
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Barrows Hall University of Maine Orono ME 04469 United States;X-APPLE-RADIUS=500;X-TITLE=University of Maine:geo:-68.6687076,44.897732
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DTSTART;TZID=America/New_York:20260429T150000
DTEND;TZID=America/New_York:20260429T160000
DTSTAMP:20260409T091255
CREATED:20260403T171413Z
LAST-MODIFIED:20260403T171413Z
UID:10007959-1777474800-1777478400@umaine.edu
SUMMARY:Math Awards Ceremony
DESCRIPTION:The Department of Mathematics and Statistics will be honoring Math Majors along with recognizing graduating Undergraduate and Graduate program students to wrap up another school year. The event will take place on Wednesday\, April 29\, 2026 at 3:00pm in Hill Auditorium in Barrows Hall. Refreshments will be provided for the event.
URL:https://umaine.edu/calendar/event/math-awards-ceremony/
LOCATION:Barrows Hall\, University of Maine\, Orono\, ME\, 04469\, United States
CATEGORIES:Student Activities
ORGANIZER;CN="Department of Mathematics & Statistics":MAILTO:mathstats@maine.edu
GEO:44.897732;-68.6687076
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