In mathematics, systolic geometry is the study of systolic invariants of manifolds and polyhedra, as initially conceived by Charles Loewner and developed by Mikhail Gromov, Michael Freedman, Peter Sarnak, Mikhail Katz, Larry Guth, and others, in its arithmetical, ergodic, and topological manifestations. See also a slower-paced Introduction to systolic geometry. (Wikipedia).
Systolic inequalities - Alexey Balitskiy
Short Talks by Postdoctoral Members Topic: Systolic inequalities Speaker: Alexey Balitskiy Affiliation: Member, School of Mathematics Date: September 28, 2022
From playlist Mathematics
Metaphors in Systolic Geometry - Larry Guth
Larry Guth University of Toronto; Institute for Advanced Study October 18, 2010 The systolic inequality says that if we take any metric on an n-dimensional torus with volume 1, then we can find a non-contractible curve in the torus with length at most C(n). A remarkable feature of the ine
From playlist Mathematics
#Cycloid: A curve traced by a point on a circle rolling in a straight line. (A preview of this Sunday's video.)
From playlist Miscellaneous
Lie derivatives of differential forms
Introduces the lie derivative, and its action on differential forms. This is applied to symplectic geometry, with proof that the lie derivative of the symplectic form along a Hamiltonian vector field is zero. This is really an application of the wonderfully named "Cartan's magic formula"
From playlist Symplectic geometry and mechanics
Exploring Symplectic Embeddings and Symplectic Capacities
Speakers o Alex Gajewski o Eli Goldin o Jakwanul Safin o Junhui Zhang Project Leader: Kyler Siegel Abstract: Given a domain (e.g. a ball) in Euclidean space, we can ask what is its volume. We can also ask when one domain can be embedded into another one without distorting volumes. These
From playlist 2019 Summer REU Presentations
Trigonometry 6 The Sine of the Sum and the Difference of Two Angles
A description of the sine function of the sum and difference of two angles.
From playlist Trigonometry
From playlist Geometry: Dynamic Interactives!
Lizhi Chen - Topological complexity of manifolds via systolic geometry
38th Annual Geometric Topology Workshop (Online), June 15-17, 2021 Lizhi Chen, Lanzhou University Title: Topological complexity of manifolds via systolic geometry Abstract: We discuss homology and homotopy complexity of manifolds in terms of Gromov’s systolic inequality. The optimal const
From playlist 38th Annual Geometric Topology Workshop (Online), June 15-17, 2021
Lizhi Chen: Triangulation Complexity of Hyperbolic Manifolds and Asymptotic Geometry
Lizhi Chen, Lanzhou University Title: Triangulation Complexity of Hyperbolic Manifolds and Asymptotic Geometry The triangulation complexity is related to volume of hyperbolic manifolds via simplicial volume. On the other hand, Gromov showed that simplicial volume is related to topological
From playlist 39th Annual Geometric Topology Workshop (Online), June 6-8, 2022
Matthew Hastings - Building Manifolds from Error Correcting Codes - IPAM at UCLA
Recorded 02 September 2021. Matthew Hastings of Microsoft Research presents "Building Manifolds from Error Correcting Codes" at IPAM's Graduate Summer School: Mathematics of Topological Phases of Matter. Learn more online at: http://www.ipam.ucla.edu/programs/summer-schools/graduate-summer
From playlist Graduate Summer School 2021: Mathematics of Topological Phases of Matter
Symplectic topology and the loop space - Jingyu Zhao
Topic: Symplectic topology and the loop space Speaker: Jingyu Zhao, Member, School of Mathematics Time/Room: 4:45pm - 5:00pm/S-101 More videos on http://video.ias.edu
From playlist Mathematics
Orbifolds and Systolic Inequalities - Christian Lange
Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoominar Topic: Orbifolds and Systolic Inequalities Speaker: Christian Lange Affiliation: Mathematisches Institut der Universität München Date: January 13, 2023 In this talk, I will first discuss some instances in which orbi
From playlist Mathematics
Symplectic methods for sharp systolic inequalities - Umberto Hryniewicz
Variational Methods in Geometry Seminar Topic: Symplectic methods for sharp systolic inequalities Speaker: Umberto Hryniewicz Affiliation: Universidade Federal do Rio de Janeiro; Member, School of Mathematics Date: January 22, 2019 For more video please visit http://video.ias.edu
From playlist Variational Methods in Geometry
C. Judge - Systoles in translation surfaces
I will discuss joint work with Hugo Parlier concerning the shortest noncontractible loops—’systoles’—in a translation surface. In particular, we provide estimates (some sharp) on the number of systoles (up to homotopy) in the strata H(2g-2) and the stratum H(1,1). We also determine the ma
From playlist Ecole d'été 2018 - Teichmüller dynamics, mapping class groups and applications
Arnaud de mesmay: Discrete systolic geometry and decompositions of triangulated surfaces
Find this video and other talks given by worldwide mathematicians on CIRM's Audiovisual Mathematics Library: http://library.cirm-math.fr. And discover all its functionalities: - Chapter markers and keywords to watch the parts of your choice in the video - Videos enriched with abstracts, b
From playlist Geometry
Isometry groups of the projective line (I) | Rational Geometry Math Foundations 138 | NJ Wildberger
The projective line can be given a Euclidean structure, just as the affine line can, but it is a bit more complicated. The algebraic structure of this projective line supports some symmetries. Symmetry in mathematics is often most efficiently encoded with the idea of a group--a technical t
From playlist Math Foundations
Examples related to Viterbo's conjectures - Michael Hutchings
IAS/PU-Montreal-Paris-Tel-Aviv Symplectic Geometry Topic: Examples related to Viterbo's conjectures Speaker: Michael Hutchings Affiliation: University of California, Berkeley Date: October 23, 2020 For more video please visit http://video.ias.edu
From playlist Mathematics
Trigonometry 3 The Sine Relationship
The Sine Relationship relates the angles and sides of non-right-triangles.
From playlist Trigonometry