In mathematics, a Gassmann triple (or Gassmann-Sunada triple) is a group G together with two faithful actions on sets X and Y, such that X and Y are not isomorphic as G-sets but every element of G has the same number of fixed points on X and Y. They were introduced by Fritz Gassmann in 1926. (Wikipedia).
Christian SCHUBERT - New Techniques for Worldline Integration
The worldline formalism provides an alternative to Feynman diagrams in the construction of amplitudes and effective actions that shares some of the superior properties of the organization of amplitudes in string theory. In particular, it allows one to write down integral representations co
From playlist Algebraic Structures in Perturbative Quantum Field Theory: a conference in honour of Dirk Kreimer's 60th birthday
Homotopy elements in the homotopy group π₂(S²) ≅ ℤ. Roman Gassmann and Tabea Méndez suggested some improvements to my original ideas.
From playlist Algebraic Topology
Plus qu’une semaine avant la collision entre le #CERN et ses voisins pendant les @Automnales ! http://cern.ch/go/CERNautomnales #CERNvoisins
From playlist Français
Roland Speicher: Free probability theory - Lecture 1
Mini course of the conference "Noncommutative geometry meets topological recursion", August 2021, University of Münster. Abstract: Usual free probability theory was introduced by Voiculescu in the context of operator algebras. It turned out that there exists also a relation to random matri
From playlist Noncommutative geometry meets topological recursion 2021
Eteinne Farcot - The Multiradial Represenation of IUT
http://www.nottingham.ac.uk/cmmb/people/etienne.farcot
From playlist Mathematical Shenanigans
mandelbrot fractal animation 5
another mandelbrot/julia fractal animation/morph.
From playlist Fractal
Heterocyclic Chemistry @Scripps: Lecture 7
Heterocyclic chemistry is a class taught at Scripps for over a decade now. The class primarily uses “The Portable Chemist’s Consultant” as a text book. This class is also available on iTunes U. Course materials can be found there and also on the Baran Lab Twitter feed.
From playlist Heterocyclic Chemistry 2019
Heterocyclic Chemistry @Scripps: Lecture 6
Heterocyclic chemistry is a class taught at Scripps for over a decade now. The class primarily uses “The Portable Chemist’s Consultant” as a text book. This class is also available on iTunes U. Course materials can be found there and also on the Baran Lab Twitter feed.
From playlist Heterocyclic Chemistry 2019
An excellent song which I could not find on Youtube.
From playlist the absolute best of stereolab
From playlist the absolute best of stereolab
What does a triple integral represent?
► My Multiple Integrals course: https://www.kristakingmath.com/multiple-integrals-course Skip to section: 0:15 // Recap of what the double integral represents 1:22 // The triple integral has two uses (volume and mass) 1:45 // How to use the triple integral to find volume 8:59 // Why the
From playlist Calculus III
Fibonacci = Pythagoras: Help save a beautiful discovery from oblivion
In 2007 a simple beautiful connection Pythagorean triples and the Fibonacci sequence was discovered. This video is about popularising this connection which previously went largely unnoticed. 00:00 Intro 07:07 Pythagorean triple tree 13:44 Pythagoras's other tree 16:02 Feuerbach miracle 24
From playlist Recent videos
Comparative advantage in an interest rate swap (FRM T3-31)
[my xls is here https://trtl.bz/2DceGc6] AAACorp has a comparative advantage in fixed-rate markets, but BBBCorp has a comparative advantage in floating-rate markets (even as it pays more everwhere!). The difference in spreads (in this case, the difference is 0.50% = 1.20% - 0.70%) is the g
From playlist Financial Markets and Products: Intro to Derivatives (FRM Topic 3, Hull Ch 1-7)
Koen van den Dungen: Indefinite spectral triples and foliations of spacetime
Motivated by Dirac operators on Lorentzian manifolds, we propose a new framework to deal with non-symmetric and non-elliptic operators in noncommutative geometry. We provide a definition for indefinite spectral triples, and show that these correspond bijectively with certain pairs of spect
From playlist HIM Lectures: Trimester Program "Non-commutative Geometry and its Applications"
Monodromy of nFn−1 hypergeometric functions and arithmetic groups II - Venkataramana
Speaker: T. N. Venkataramana (TIFR) Title: Monodromy of nFn−1 hypergeometric functions and arithmetic groups II We describe results of Levelt and Beukers-Heckman on the explicit computation of monodromy for generalised hypergeometric functions of one variable. We then discuss the question
From playlist Mathematics