BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Yury Ustinovsky (Lehigh University)
DTSTART;VALUE=DATE-TIME:20210916T174000Z
DTEND;VALUE=DATE-TIME:20210916T184000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/1
DESCRIPTION:Title: Geometric Flows on Complex Manifolds and Generalized Kahler-R
icci Solitons\nby Yury Ustinovsky (Lehigh University) as part of Iowa
State Geometric Analysis Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Xuan Hien Nguyen (Iowa State University)
DTSTART;VALUE=DATE-TIME:20210930T174000Z
DTEND;VALUE=DATE-TIME:20210930T184000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/2
DESCRIPTION:Title: The fundamental gap of horoconvex domains in hyperbolic space
\nby Xuan Hien Nguyen (Iowa State University) as part of Iowa State Ge
ometric Analysis Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/2/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Xuan Hien Nguyen (Iowa State University)
DTSTART;VALUE=DATE-TIME:20211007T174000Z
DTEND;VALUE=DATE-TIME:20211007T184000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/3
DESCRIPTION:Title: The vanishing of the fundamental gap of convex domains in hyp
erbolic n-space\nby Xuan Hien Nguyen (Iowa State University) as part o
f Iowa State Geometric Analysis Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/3/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Connor Mooney (University of California-Irvine)
DTSTART;VALUE=DATE-TIME:20211014T174000Z
DTEND;VALUE=DATE-TIME:20211014T184000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/4
DESCRIPTION:Title: Solutions to the Monge-Ampere equation with polyhedral and Y-
shaped singularities\nby Connor Mooney (University of California-Irvin
e) as part of Iowa State Geometric Analysis Seminar\n\n\nAbstract\nThe Mon
ge-Ampere equation det(D^2u) = 1 arises in prescribed\ncurvature problems
and in optimal transport. An interesting feature of\nthe equation is that
it admits singular solutions. We will discuss new\nexamples of convex func
tions on R^n that solve the Monge-Ampere equation\naway from finitely many
points\, but contain polyhedral and Y-shaped\nsingular structures. Along
the way we will discuss geometric motivations\nfor constructing such examp
les\, as well as their connection to a certain\nobstacle problem.\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/4/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jingrui Cheng (Stony Brook University)
DTSTART;VALUE=DATE-TIME:20211021T174000Z
DTEND;VALUE=DATE-TIME:20211021T184000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/5
DESCRIPTION:Title: Analytical aspect for the existence of constant scalar curvat
ure Kahler metric\nby Jingrui Cheng (Stony Brook University) as part o
f Iowa State Geometric Analysis Seminar\n\n\nAbstract\nI will explain the
a priori estimates for the cscK equation on a compact manifold\, and how t
o use these estimates to obtain existence when the associated energy funct
ional is "coercive". If time permits\, I will also explain how we can hope
to get existence from a more "algebraic" condition\, which might be easie
r to check in practice.\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/5/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Fangyang Zheng (Chongqing Normal University)
DTSTART;VALUE=DATE-TIME:20211028T174000Z
DTEND;VALUE=DATE-TIME:20211028T184000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/6
DESCRIPTION:Title: The Hermitian geometry of Strominger connections\nby Fang
yang Zheng (Chongqing Normal University) as part of Iowa State Geometric A
nalysis Seminar\n\n\nAbstract\nIn this talk we will discuss the geometry o
f Strominger connection of Hermitian manifolds\, based\non recent joint wo
rks with Quanting Zhao. We will focus on two special types of Hermitian ma
nifolds:\nStrominger Kahler-like (SKL) manifolds\, and Strominger parallel
torsion (SPT) manifolds. The first class\nmeans Hermitian manifolds whose
Strominger connection (also known as Bismut connection) has curvature\nte
nsor obeying all Kahler symmetries\, and the second class means Hermitian
manifolds whose Strominger\nconneciton has parallel torsion. We showed tha
t any SKL manifold is SPT\, which is known as (an equivalent\nform of) the
AOUV Conjecture (namely\, SKL implies pluriclosedness). We obtained a cha
racterization\ntheorem for SPT condition in terms of Strominger curvature\
, which generalizes the previous theorem. We\nwill also discuss examples a
nd some structural results for SKL and SPT manifolds.\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/6/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Damin Wu (University of Connecticut)
DTSTART;VALUE=DATE-TIME:20211104T174000Z
DTEND;VALUE=DATE-TIME:20211104T184000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/7
DESCRIPTION:Title: Kahler-Einstein metric on negatively pinched complete Kahler
manifolds\nby Damin Wu (University of Connecticut) as part of Iowa Sta
te Geometric Analysis Seminar\n\n\nAbstract\nWe will discuss the existence
and uniqueness of the complete Kahler-Einstein metric on a complete Kahle
r manifold with holomorphic curvature bounded between two negative constan
ts. This is based on a joint with Yau.\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/7/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sigurd Angenent (University of Wisconsin-Madison)
DTSTART;VALUE=DATE-TIME:20211111T184000Z
DTEND;VALUE=DATE-TIME:20211111T194000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/8
DESCRIPTION:Title: Non-uniqueness in geometric flows\nby Sigurd Angenent (Un
iversity of Wisconsin-Madison) as part of Iowa State Geometric Analysis Se
minar\n\n\nAbstract\nFor many geometric flows it is true that smooth initi
al data\nhave smooth solutions on a sufficiently short time interval. Suc
h\nsolutions can then develop singularities\, after which a generalized\ns
olution may still exist. I will show examples in Mean Curvature Flow\nand
RIcci Flow where solution admits more than one continuation after\nthe fi
rst singularity.\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/8/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Pablo Raúl Stinga (Iowa State University)
DTSTART;VALUE=DATE-TIME:20210909T174000Z
DTEND;VALUE=DATE-TIME:20210909T184000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/9
DESCRIPTION:Title: Regularity for C1\,alpha interface transmission problems\
nby Pablo Raúl Stinga (Iowa State University) as part of Iowa State Geome
tric Analysis Seminar\n\n\nAbstract\nWe show existence\, uniqueness\, and
optimal regularity of solutions to transmission problems for harmonic func
tions with C1\,α interfaces. For this\, the main tool we develop is a new
geometric stability argument based on the mean value property. This is jo
int work with Luis A. Caffarelli and María Soria-Carro (UT Austin).\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/9/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jakob Hultgren (University of Maryland)
DTSTART;VALUE=DATE-TIME:20220221T211000Z
DTEND;VALUE=DATE-TIME:20220221T221000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/10
DESCRIPTION:Title: Singular affine structures\, Monge-Ampère equations and uni
t simplices\nby Jakob Hultgren (University of Maryland) as part of Iow
a State Geometric Analysis Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/10/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Clayton Shonkwiler (Colorado State University)
DTSTART;VALUE=DATE-TIME:20220228T211000Z
DTEND;VALUE=DATE-TIME:20220228T221000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/11
DESCRIPTION:Title: Geometric Approaches to Frame Theory\nby Clayton Shonkwi
ler (Colorado State University) as part of Iowa State Geometric Analysis S
eminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/11/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hung Tran (Texas Tech University)
DTSTART;VALUE=DATE-TIME:20220307T211000Z
DTEND;VALUE=DATE-TIME:20220307T221000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/12
DESCRIPTION:Title: On the Morse Index with Constraints\nby Hung Tran (Texas
Tech University) as part of Iowa State Geometric Analysis Seminar\n\nAbst
ract: TBA\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/12/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sebastien Picard (University of British Columbia)
DTSTART;VALUE=DATE-TIME:20220321T201000Z
DTEND;VALUE=DATE-TIME:20220321T211000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/13
DESCRIPTION:Title: Topological Transitions of Calabi-Yau Threefolds\nby Seb
astien Picard (University of British Columbia) as part of Iowa State Geome
tric Analysis Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/13/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gunhee Cho
DTSTART;VALUE=DATE-TIME:20220328T201000Z
DTEND;VALUE=DATE-TIME:20220328T211000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/14
DESCRIPTION:by Gunhee Cho as part of Iowa State Geometric Analysis Seminar
\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/14/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Zhiqin Lu
DTSTART;VALUE=DATE-TIME:20220404T201000Z
DTEND;VALUE=DATE-TIME:20220404T211000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/15
DESCRIPTION:by Zhiqin Lu as part of Iowa State Geometric Analysis Seminar\
n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/15/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Reto Busano (University of Torino)
DTSTART;VALUE=DATE-TIME:20220919T160000Z
DTEND;VALUE=DATE-TIME:20220919T165000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/16
DESCRIPTION:Title: Noncompact self-shrinkers for mean curvature flow with arbit
rary genus\nby Reto Busano (University of Torino) as part of Iowa Stat
e Geometric Analysis Seminar\n\n\nAbstract\nIn his lecture notes on mean c
urvature flow\, Ilmanen conjectured the existence of noncompact self-shrin
kers with arbitrary genus. Here\, we employ min-max techniques to give a r
igorous existence proof for these surfaces. Conjecturally\, the self-shrin
kers that we obtain have precisely one (asymptotically conical) end. We co
nfirm this for large genus via a precise analysis of the limiting object o
f sequences of such self-shrinkers for which the genus tends to infinity.
Finally\, we present some numerical evidence for a further new family of n
oncompact self-shrinkers with odd genus and two asymptotically conical end
s. This is joint work with Huy Nguyen and Mario Schulz.\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/16/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Antonio de Rosa (University of Maryland)
DTSTART;VALUE=DATE-TIME:20220926T160000Z
DTEND;VALUE=DATE-TIME:20220926T165000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/17
DESCRIPTION:Title: Min-max construction of anisotropic CMC surfaces\nby Ant
onio de Rosa (University of Maryland) as part of Iowa State Geometric Anal
ysis Seminar\n\n\nAbstract\nWe prove the existence of nontrivial closed su
rfaces with constant anisotropic mean curvature with respect to elliptic i
ntegrands in closed smooth 3-dimensional Riemannian manifolds. The constru
cted min-max surfaces are smooth with at most one singular point. The cons
tant anisotropic mean curvature can be fixed to be any real number. In par
ticular\, we partially solve a conjecture of Allard [Invent. Math.\, 1983]
in dimension 3.\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/17/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Soumyajit Saha (Iowa State University)
DTSTART;VALUE=DATE-TIME:20221017T160000Z
DTEND;VALUE=DATE-TIME:20221017T165000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/18
DESCRIPTION:Title: Effects of perturbation on low energy Laplace eigenfunctions
\nby Soumyajit Saha (Iowa State University) as part of Iowa State Geom
etric Analysis Seminar\n\n\nAbstract\nIn this talk\, we will discuss the e
ffects of perturbation on certain topological and geometrical properties o
f the nodal sets/vanishing sets of Laplace eigenfunctions. Our discussion
will be centered around a well-known conjecture of Payne which states that
: the zero set corresponding to the second Laplace eigenfunction of any bo
unded planar domain should intersect the boundary at exactly two points. W
e will look into certain stability properties of the nodal sets and obtain
some results concerning the conjecture. Finally\, we will look into an op
timization problem that arises from the famous fundamental gap conjecture
on convex domains\, which will also involve certain perturbative technique
s.\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/18/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Malik Tuerkoen (UCSB)
DTSTART;VALUE=DATE-TIME:20221205T170000Z
DTEND;VALUE=DATE-TIME:20221205T175000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/21
DESCRIPTION:Title: Log-Concavity and Fundamental Gaps on Surfaces of Positive C
urvature\nby Malik Tuerkoen (UCSB) as part of Iowa State Geometric Ana
lysis Seminar\n\n\nAbstract\nThe fundamental gap is the difference of the
first two eigenvalues of the Laplace operator\, which is important both in
mathematics and physics and has been extensively studied. For the Dirichl
et boundary condition the log-concavity estimate of the first eigenfunctio
n plays a crucial role\, which was established for convex domains in the E
uclidean space and round sphere. Joint with G. Khan\, H. Nguyen and G. Wei
\, we obtain log-concavity estimates of the first eigenfunction for convex
domains in surfaces of positive curvature and consequently establish fund
amental gap estimates.\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/21/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Armin Schikorra (University of Pittsburgh)
DTSTART;VALUE=DATE-TIME:20230306T170000Z
DTEND;VALUE=DATE-TIME:20230306T175000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/22
DESCRIPTION:Title: Div-Curl estimates and harmonic maps: Local and nonlocal
\nby Armin Schikorra (University of Pittsburgh) as part of Iowa State Geom
etric Analysis Seminar\n\n\nAbstract\nI will present definitions and appli
cations of a notion of\nfractional div-curl structures. I will talk about
their role in the\ntheory of fractional harmonic maps\, such as regularity
theory and\nconservation laws.\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/22/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Flavien Léger (INRIA Paris)
DTSTART;VALUE=DATE-TIME:20231002T160000Z
DTEND;VALUE=DATE-TIME:20231002T165000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/23
DESCRIPTION:Title: Cross-curvature: new areas of applications\nby Flavien L
éger (INRIA Paris) as part of Iowa State Geometric Analysis Seminar\n\n\n
Abstract\nCross-curvature\, also known as the Ma–Trudinger–Wang tensor
\, was introduced in the field of optimal transport to study the regularit
y of certain Monge–Ampère equations. Until recently the use of cross-cu
rvature has been almost entirely confined to the setting of optimal transp
ort.\n\nIn this talk I will introduce two new areas of applications. First
ly\, in the field continuous optimization\, I will present a new class of
gradient-type methods that extend gradient descent to more general geometr
ies. Thanks to tools from optimal transport and in particular cross-curvat
ure\, we can develop a theory for stability and convergence rates that uni
fies existing results and establishes new ones.\n\nIn the second part of t
he talk\, I will present geometric formulas for the asymptotics of certain
integrals studied with the Laplace method. These are of interest for cert
ain entropic transport problems and small-time limits of the heat kernel.\
n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/23/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gabriella Clemente (Paris Orsay)
DTSTART;VALUE=DATE-TIME:20231016T160000Z
DTEND;VALUE=DATE-TIME:20231016T165000Z
DTSTAMP;VALUE=DATE-TIME:20240329T132548Z
UID:ISUGeometricAnalysis/24
DESCRIPTION:Title: The curvature of almost-hermitian structures\nby Gabriel
la Clemente (Paris Orsay) as part of Iowa State Geometric Analysis Seminar
\n\n\nAbstract\nIn this talk\, I will discuss some local\, higher order\,
differential obstructions to the integrability of almost-complex structure
s. I will explain how to specialize these obstruction equations to the non
-flat\, constant curvature\, almost-hermitian case\, and will produce a gl
obal obstruction from them under a compactness assumption. I will end with
an outline of a strategy to recover known results on the non-existence of
compact\, non-flat\, hermitian space forms. The strategy can potentially
lead to finding new examples of almost-hermitian but not hermitian manifol
ds via relaxation of the initial curvature constraint.\n
LOCATION:https://researchseminars.org/talk/ISUGeometricAnalysis/24/
END:VEVENT
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