Quadratic forms

Witt group

In mathematics, a Witt group of a field, named after Ernst Witt, is an abelian group whose elements are represented by symmetric bilinear forms over the field. (Wikipedia).

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What is particle physics?

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From playlist Science Unplugged: Particle Physics

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The Particle Physics Song

A version of a famous tune by Flanders and Swann, with lyrics by Danuta Orlowska. Interpreted by CERN Choir, performing in the CERN Control Centre.

From playlist Music and fun

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Who was Newton?

Subscribe to our YouTube Channel for all the latest from World Science U. Visit our Website: http://www.worldscienceu.com/ Like us on Facebook: https://www.facebook.com/worldscienceu Follow us on Twitter: https://twitter.com/worldscienceu

From playlist Science Unplugged: Physics

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Reuploaded: https://youtu.be/oGDAov8TjCg

Reuploaded: https://youtu.be/oGDAov8TjCg

From playlist Pint of Science!

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Particle Physics 1: Introduction

Part 1 of a series: covering introduction to Quantum Field Theory, creation and annihilation operators, fields and particles.

From playlist Particle Physics

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Marc Levine: Refined enumerative geometry (Lecture 1)

The lecture was held within the framework of the Hausdorff Trimester Program: K-Theory and Related Fields. Marc Levine: Refined enumerative geometry Abstract: Lecture 1: Milnor-Witt sheaves, motivic homotopy theory and Chow-Witt groups We review the Hoplins-Morel construction of the Miln

From playlist HIM Lectures: Trimester Program "K-Theory and Related Fields"

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Marc Levine: Chow Witt groups, ramification and quadratic forms

The lecture was held within the framework of the Hausdorff Trimester Program: Periods in Number Theory, Algebraic Geometry and Physics. Abstract: Replacing the Chow groups with the Barge-Morel-Fasel Chow-Witt groups enables refining many classical constructions involving algebraic cycles

From playlist Workshop: "Periods and Regulators"

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History of science 7: Did Witt discover the Leech lattice?

In about 1970 the German mathematician Witt claimed to have discovered the Leech lattice many years before Leech. This video explains what the Leech lattice is and examines the evidence for Witt's claim. Lieven Lebruyn discussed this question on his blog: http://www.neverendingbooks.org/w

From playlist History of science

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Pavlovian reactions aren't just for dogs - Benjamin N. Witts

View full lesson: http://ed.ted.com/lessons/pavlovian-reactions-aren-t-just-for-dogs-benjamin-n-witts Dr. Ivan Pavlov's groundbreaking work revealed that a dog will respond to neutral stimuli, such as a bell, in the same way that it will respond to, say, mouth-watering food. This research

From playlist Mind Matters

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A. Shiho - On relative log de Rham-Witt complex

The notion of relative log de Rham-Witt complex, which is the log version of relative de Rham-Witt complex of Langer-Zink, is defined by Matsuue. In this talk, we give the comparison theorem between relative log de Rham-Witt cohomology and relative log crystalline cohomology for log smooth

From playlist Arithmetic and Algebraic Geometry: A conference in honor of Ofer Gabber on the occasion of his 60th birthday

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Yonatan Harpaz - New perspectives in hermitian K-theory I

For questions and discussions of the lecture please go to our discussion forum: https://www.uni-muenster.de/TopologyQA/index.php?qa=k%26l-conference This lecture is part of the event "New perspectives on K- and L-theory", 21-25 September 2020, hosted by Mathematics Münster: https://go.wwu

From playlist New perspectives on K- and L-theory

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Yonatan Harpaz - New perspectives in hermitian K-theory III

For questions and discussions of the lecture please go to our discussion forum: https://www.uni-muenster.de/TopologyQA/index.php?qa=k%26l-conference This lecture is part of the event "New perspectives on K- and L-theory", 21-25 September 2020, hosted by Mathematics Münster: https://go.wwu

From playlist New perspectives on K- and L-theory

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Mod-01 Lec-18 Smith: Growth theory, long run equilibrium and Institutions

History of Economic Theory by Dr. Shivakumar, Department of Humanities and Social Sciences IIT Madras, For more details on NPTEL visit http://nptel.iitm.ac.in

From playlist IIT Madras: History of Economic Theory | CosmoLearning.org Economics

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Yonatan Harpaz - New perspectives in hermitian K-theory II

Warning: around 32:30 in the video, in the slide entitled "Karoubi's conjecture", a small mistake was made - in the third bulleted item the genuine quadratic structure appearing should be the genuine symmetric one (so both the green and red instances of the superscript gq should be gs), an

From playlist New perspectives on K- and L-theory

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Edward Witten, Quantum Gravity

Plática Quantum Gravity impartida por Edward Witten, en el ciclo de conferencias Solomon Lefschetz Memorial Lecture Series, llevadas a cabo en el IPN-Cinvestav en noviembre del 2011 Date: November 2011 Credit: https://www.youtube.com/watch?v=uRdCJMYc2Ds

From playlist Number Theory

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Markus Spitzweck: A Grothendieck Witt space for stable infinity categories with duality

The lecture was held within the framework of the (Junior) Hausdorff Trimester Program Topology: "Workshop: Hermitian K-theory and trace methods" In the talk we will construct a Grothendieck-Witt space for any stable infinity category with duality. We will show that if we apply our constru

From playlist HIM Lectures: Junior Trimester Program "Topology"

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Mod-11 Lec-25 Activity Based Costing and Management

Managerial Accounting by Dr. Varadraj Bapat,Department of Management,IIT Bombay.For more details on NPTEL visit http://nptel.ac.in

From playlist IIT Bombay: Managerial Accounting | CosmoLearning.org Accounting

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Marc Levine: Atiyah-Bott localization for Witt sheaf cohomology, with applications

30 September 2021 Abstract: Atiyah-Bott localization for singular cohomology of a space with a torus action has proven to be an effective tool in many areas, including enumerative geometry. We give here a parallel for cohomology with Witt-sheaf coeffcients, which is useful for computing q

From playlist Representation theory's hidden motives (SMRI & Uni of Münster)

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Order (group theory) | Prime ideal | Abelian group | Multilinear map | Algebraically closed field | Λ-ring | Vector space | Finite field | Homeomorphism | Krull dimension | Local field | Square class | Zariski topology | Surgery theory | Ε-quadratic form | Hasse–Minkowski theorem | Surgery exact sequence | Sylvester's law of inertia | Index of a subgroup | Torsion subgroup | Vladimir Voevodsky | Hilbert symbol | Perfect field | Formally real field | Split exact sequence | A¹ homotopy theory | Group ring | Brauer–Wall group | Pythagorean field | Dimension (vector space) | Equivalence class | Ideal norm | Symmetric bilinear form | Characteristic (algebra) | Mathematics | Field (mathematics) | Noetherian ring | Cyclic group | Witt vector | Tensor product of quadratic forms | Quadratically closed field | Bijection | Bilinear form | Brauer group | Torsion group | Jacobson ring | Pfister form | Quadratic form | Local ring | Algebraic group | Group homomorphism | Graded ring | Hasse invariant of a quadratic form | Parity (mathematics) | Subgroup | Spectrum of a ring | L-theory | Grothendieck group | Commutative ring