BEGIN:VCALENDAR
VERSION:2.0
METHOD:PUBLISH
PRODID:-//Mathematics Department//NONSGML mathical.php//EN
X-WR-CALNAME:Mathematics Department
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e45d5@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210204T133000
CATEGORIES:Topology Seminar
SUMMARY:Rima Chatterjee: TBA
LOCATION:Zoom please ask Ina Petkova for the Zoom login and the
password
URL:https://math.dartmouth.edu/~topology/
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4636@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210209T145000
DTEND;TZID=America/New_York:20210209T152000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:Grant Molnar: Odd\, spoof quasiperfect factorizations
DESCRIPTION:In this talk\, we formalize a notion of spoof
factorizations for a number. After briefly retracing the history of
spoof perfect factorizations\, and of quasiperfect numbers\, we
adapt the techniques of Nielsen et al. to show that the only
nontrivial odd\, spoof quasiperfect factorization with five or fewer
factors is $1^2$. Direction for further work are indicated. This
project is joint work with Jonathan Hales.
LOCATION:Meeting ID: 939 1193 8570\, Passcode: 876807
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e468a@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210211T133000
CATEGORIES:Topology Seminar
SUMMARY:Joshua Howie: Alternating genera of torus knots
DESCRIPTION:Abstract: The alternating genus of a knot is the minimum
genus of a surface onto which the knot has an alternating diagram
satisfying certain conditions. Very little is currently known about
this knot invariant. We study spanning surfaces for knots\, and
define a related invariant from the extremal spanning surfaces. This
gives a lower bound on the alternating genus and can be calculated
exactly for torus knots. We find the first examples of knots where
the alternating genus is equal to n for each n>2\, and classify all
toroidally alternating torus knots.
LOCATION:Meeting ID: 976 0635 1780\, Passcode: 385355
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e46db@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210212T131500
CATEGORIES:Combinatorics Seminar
SUMMARY:Sam Spiro: Card Guessing with Partial Feedback
DESCRIPTION:Consider the following experiment: a deck with m copies
of n different card types is randomly shuffled\, and a guesser
attempts to guess the cards sequentially as they are drawn. Each
time a guess is made\, some amount of ``feedback'' is given. For
example\, one could tell the guesser the true identity of the card
they just guessed (the complete feedback model) or they could be
told nothing at all (the no feedback model). In this talk we
explore a partial feedback model\, where upon guessing a card\, the
guesser is only told whether or not their guess was correct. We show
in this setting that\, uniformly in n\, at most m+O(m^{3/4}\\log m)
cards can be guessed correctly in expectation\, which is roughly the
number of cards one gets by naively guessing the same card type mn
times. This is joint work with Persi Diaconis\, Ron Graham\, and
Xiaoyu He.\nThere will be a tea at 12:45 in the same Zoom
room.\n\nMeeting password: Catalan#
LOCATION:Zoom\, meeting 954 4736 6763
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4733@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210216T145000
DTEND;TZID=America/New_York:20210216T152000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:Ben Antieau: Genus 1 curves in twisted projective spaces
DESCRIPTION:Does every Severi—Brauer variety contain a (possibly
singular) genus 1 curve? This basic question was asked by David
Saltman and Pete Clark and answered in low dimensions by Johan de
Jong and Wei Ho. I will explain something of the history of the
problem as well as recent joint work with Asher Auel where we show\,
with the help of a nice observation of David Saltman\, that the
answer is `yes’ for twisted forms of $\\mathbb{P}^6$ over global
fields. Our approach is purely number theoretic\, using isogenies of
elliptic curves and their torsors.
LOCATION:Meeting ID: 939 1193 8570\, Passcode: 876807
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e478a@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210223T145000
DTEND;TZID=America/New_York:20210223T152000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:Eran Assaf: Paramodular forms and computation
DESCRIPTION:In this talk\, we will review briefly the paramodularity
conjecture\, which is an analogue of the modularity theorem for
abelian surfaces. We will introduce the notion of paramodular
forms\, and discuss the Jacquet-Langlands correspondence for such
forms\, establishing their equivalence to quintic orthogonal forms.
In the last part of the talk\, we will briefly discuss the
computation of paramodular forms\, using this correspondence.
LOCATION:Meeting ID: 939 1193 8570\, Passcode: 876807
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e47d8@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210225T160000
CATEGORIES:Math Colloquium
SUMMARY:Edray Herber Goins: Visualizing Toroidal Belyĭ Pairs
DESCRIPTION:A Bely\\u{\\i} map $\\beta: \\mathbb P^1(\\mathbb C)
\\to \\mathbb P^1(\\mathbb C)$ is a rational function with at most
three critical values\; we may assume these values are $\\{ 0\, \\\,
1\, \\\, \\infty \\}$. A Dessin d'Enfant is a planar bipartite
graph obtained by considering the preimage of a path between two of
these critical values\, usually taken to be the line segment from 0
to 1. Such graphs can be drawn on the sphere by composing with
stereographic projection: $\\beta^{-1} \\bigl( [0\,1] \\bigr)
\\subseteq \\mathbb P^1(\\mathbb C) \\simeq S^2(\\mathbb R)$.
\n\nReplacing $\\mathbb P^1$ with an elliptic curve $E$\, there is a
similar definition of a Bely\\u{\\i} map $\\beta: E(\\mathbb C) \\to
\\mathbb P^1(\\mathbb C)$. The corresponding Dessin d'Enfant can be
drawn on the torus by composing with an elliptic logarithm:
$\\beta^{-1} \\bigl( [0\,1] \\bigr) \\subseteq E(\\mathbb C) \\simeq
\\mathbb T^2(\\mathbb R)$. In this project\, we use the open source
\\texttt{Sage} to write code which takes an elliptic curve $E$ and a
Bely\\u{\\i} map $\\beta$ to return the Dessin d'Enfant of this map
-- both in two and three dimensions. We focus on several examples
of Bely\\u{\\i} maps which appear in the $L$-Series and Modular
Forms Database (LMFDB).
LOCATION:https://dartmouth.zoom.us/j/92520450982?pwd=NzIyc1YvdFNQcUVCU29wRG9BNU9FZz09
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4831@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210225T190000
CATEGORIES:Lahr Lecture
SUMMARY:Edray Herber Goins: A Dream Deferred: 50 Years of Blacks in
Mathematics
DESCRIPTION:In 1934\, Walter Richard Talbot earned his Ph.D. from
the University of Pittsburgh\; he was the fourth African American to
earn a doctorate in mathematics. Unfortunately\, opportunities for
African Americans during that time to continue their research were
severely limited. “When I entered the college teaching scene\, it
was 1934\,” Talbot is quoted as saying. “It was 35 years later
before I had a chance to start existing in the national activities
of the mathematical bodies.” Concerned with the exclusion of
African Americans at various national meetings\, Talbot helped to
found the National Association of Mathematicians (NAM)\, the
nationwide organization of African Americans in Mathematics\, in
1969. In this talk\, we take a tour of the mathematics done by
African and African Americans over the past 50 years since the
founding of NAM\, weaving in personal stories and questions for
reflection for the next 50 years.
LOCATION:https://dartmouth.zoom.us/j/95185924070?pwd=Ymw1bW4xNW82ZVF4S0Z6ZXBEMzVBUT09
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e488a@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210302T145000
DTEND;TZID=America/New_York:20210302T152000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:Ciaran Schembri: Quadratic Chabauty and Shimura Curves
DESCRIPTION:Recent advances in making Kim’s nonabelian Chabauty
program explicit and amenable to computation have made it possible
to compute the rational points on a curve of genus g whose Jacobian
has rank g in some cases\; for example the ‘cursed’ modular
curve. Here we give an example to show how this can be applied to
Shimura curves. This is part of a group project started at the
Simons workshop in June 2020.
LOCATION:Meeting ID: 939 1193 8570\, Passcode: 876807
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e48d8@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210309T145000
DTEND;TZID=America/New_York:20210309T152000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:Richard Haburcak: Brill-Noether Special K3 Surfaces
DESCRIPTION:In low degree\, Mukai showed that a polarized K3 surface
(S\,H) is Brill-Noether special if and only if every curve in the
linear system |H| is Brill-Noether special. In this talk we'll
briefly review Brill-Noether theory for curves and translate it over
to K3 surfaces. We then present some hurdles found on the way to
proving this result in degree 26\, with hope of a resolution.
LOCATION:Meeting ID: 939 1193 8570\, Passcode: 876807
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4925@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210311T123000
DTEND;TZID=America/New_York:20210311T040000
CATEGORIES:Special Event
SUMMARY:Directed Reading Program Final Presentations\, Meeting ID:
995 2139 9249 Passcode: 205629
DESCRIPTION:To conclude a term of learning mathematics\, the
undergraduate participants of Dartmouth Math Department's first
Directed Reading Program will give brief talks sharing mathematics
they learned over the term. Topics and presenters can be found at
https://math.dartmouth.edu/~drp/Final%20Presentations.html
LOCATION:Zoom
URL:https://dartmouth.zoom.us/j/99521399249?pwd=YkI4WlJtVUFWZGR0WVR5NnVjYlF0dz09
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4973@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210330T145000
DTEND;TZID=America/New_York:20210330T153000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:Grant Molnar: TBA
LOCATION:Meeting ID: 939 1193 8570\, Passcode: 876807
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e49bb@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210402T131500
CATEGORIES:Combinatorics Seminar
SUMMARY:Erika Roldan: TBA
DESCRIPTION:\n\nSchedule subject to change. Details will be
announced later.
LOCATION:Zoom
URL:http://www.math.dartmouth.edu/~comb/
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4a07@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210406T145000
DTEND;TZID=America/New_York:20210406T153000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:TBA
LOCATION:Meeting ID: 939 1193 8570\, Passcode: 876807
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4a4e@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210407T190000
CATEGORIES:Math Colloquium
SUMMARY:Mary Gray: Don’t Say No! A Mathematician’s Journey into
Human Rights
DESCRIPTION:https://dartmouth.zoom.us/j/8709122782?pwd=NHhGcTNPU3BXVkZOTW9FYVR6OWpZQT09\n\nZOOM
ID 870 912 2782\n\nA travelogue of mathematics intertwined with
human rights has been my professional life. How did I move from my
childhood in Nebraska to using my skills on six continents? Trained
in abstract mathematics\, I switched to statistics and later to the
law\, seeking I told myself\, a way to use my knowledge to make the
world a better place\, meanwhile making it more interesting for me.
What motivated me to tackle the fortress of the mathematical
establishment\, the kingdom of actuaries\, the assorted violators of
human rights? What has proved useful in my quests? No matter how
interesting what I might be doing\, the opportunity to do more lured
me on. It seems I rarely resisted the prospect of using for a good
cause what I knew or could learn. But at the same time\, I had to
recognize and avoid the ethically questionable and the just
time-wasting tasks.\nPlease ask Vladimir Chernov for the
password\n\nTHIS MEETING WILL BE RECORDED
LOCATION:004 Kemeny Hall
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4aac@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210407T190000
DTEND;TZID=America/New_York:20210407T203000
CATEGORIES:Special Event
SUMMARY:Mary Gray: Don’t Say No! A Mathematician’s Journey into
Human Rights
DESCRIPTION:https://dartmouth.zoom.us/j/8709122782?pwd=NHhGcTNPU3BXVkZOTW9FYVR6OWpZQT09\n\n(This
event is sponsored by the AWM Student Chapter in celebration of the
50th anniversary of the AWM. We will have a 30 minute time for
discussion after the talk. The discussion will NOT be
recorded.)\n\nA travelogue of mathematics intertwined with human
rights has been my professional life. How did I move from my
childhood in Nebraska to using my skills on six continents? Trained
in abstract mathematics\, I switched to statistics and later to the
law\, seeking I told myself\, a way to use my knowledge to make the
world a better place\, meanwhile making it more interesting for me.
What motivated me to tackle the fortress of the mathematical
establishment\, the kingdom of actuaries\, the assorted violators of
human rights? What has proved useful in my quests? No matter how
interesting what I might be doing\, the opportunity to do more lured
me on. It seems I rarely resisted the prospect of using for a good
cause what I knew or could learn. But at the same time\, I had to
recognize and avoid the ethically questionable and the just
time-wasting tasks.\n
LOCATION:Zoom ID 870 912 2782 Please ask Vladimir Chernov for the
Password
URL:https://math.dartmouth.edu/calendar/more.php?event_id=2685
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4b00@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210408T133000
CATEGORIES:Topology Seminar
SUMMARY:Patricia Cahn: TBA
LOCATION:Zoom\, please ask Vladimir Chernov for the login and
password
URL:https://math.dartmouth.edu/~topology/
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4b53@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210413T145000
DTEND;TZID=America/New_York:20210413T153000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:TBA
LOCATION:Meeting ID: 939 1193 8570\, Passcode: 876807
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4b99@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210415T133000
CATEGORIES:Topology Seminar
SUMMARY:Juanita Pinzon-Caicedo: TBA
LOCATION:Meeting ID: 976 0635 1780\, Passcode: 385355
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4be2@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210416T131500
CATEGORIES:Combinatorics Seminar
SUMMARY:GaYee Park: TBA
DESCRIPTION:Schedule subject to change. Details will be announced
later.
LOCATION:Zoom
URL:http://www.math.dartmouth.edu/~comb
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4c2e@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210420T145000
DTEND;TZID=America/New_York:20210420T153000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:Kendall Martin: TBA
LOCATION:Meeting ID: 939 1193 8570\, Passcode: 876807
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4c76@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210422T133000
CATEGORIES:Topology Seminar
SUMMARY:Roman Golovko: TBA
LOCATION:Zoom\, please ask Vladimir Chernov for the Zoom ID and the
Password
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4cc0@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210427T145000
DTEND;TZID=America/New_York:20210427T153000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:TBA
LOCATION:Meeting ID: 939 1193 8570\, Passcode: 876807
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4d07@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210504T145000
DTEND;TZID=America/New_York:20210504T153000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:TBA
LOCATION:Meeting ID: 939 1193 8570\, Passcode: 876807
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4d4d@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210511T145000
DTEND;TZID=America/New_York:20210511T153000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:TBA
LOCATION:Meeting ID: 939 1193 8570\, Passcode: 876807
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4d92@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210518T145000
DTEND;TZID=America/New_York:20210518T153000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:TBA
LOCATION:Meeting ID: 939 1193 8570\, Passcode: 876807
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4dd8@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210525T145000
DTEND;TZID=America/New_York:20210525T153000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:Carl Pomerance: TBA
LOCATION:Meeting ID: 939 1193 8570\, Passcode: 876807
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20210305T190201Z
UID:20210305T14020160428029e4e20@math.dartmouth.edu
DTSTART;TZID=America/New_York:20210601T145000
DTEND;TZID=America/New_York:20210601T153000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:TBA
LOCATION:Meeting ID: 939 1193 8570\, Passcode: 876807
END:VEVENT
END:VCALENDAR