Category theory

Dialectica space

Dialectica spaces are a categorical way of constructing models of linear logic. They were introduced by Valeria de Paiva, Martin Hyland's student, in her doctoral thesis, as a way of modeling both linear logic and Gödel's Dialectica interpretation—hence the name. Given a category C and a specific object K of C with certain (logical) properties, one can construct the category of Dialectica spaces over C, whose objects are pairs of objects of C, related by a C-morphism into K. Morphisms of Dialectica spaces are similar to Chu space morphisms, but instead of an equality condition, they have an inequality condition, which is read as a logical implication: the first object implies the second. (Wikipedia).

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What is a Vector Space? (Abstract Algebra)

Vector spaces are one of the fundamental objects you study in abstract algebra. They are a significant generalization of the 2- and 3-dimensional vectors you study in science. In this lesson we talk about the definition of a vector space and give a few surprising examples. Be sure to su

From playlist Abstract Algebra

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Giuseppe Rosolini: Triposes and Gödel's Dialectica Interpretation

The lecture was held within the framework of the Hausdorff Trimester Program: Types, Sets and Constructions. Abstract: In previous joint work with B. Biering, L. Birkedal, C. Butz, J.M.E. Hyland, J. van Oosten, and T. Streicher, the problem of a semantic presentation of the functional int

From playlist Workshop: "Proofs and Computation"

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Paulo Oliva: On a Dialectica like version of Kleene numerical realizability

The lecture was held within the framework of the Hausdorff Trimester Program: Types, Sets and Constructions. Abstract: Kleene's original notion of realizability (1945) makes use of all (partial) computable functions as potential realisers. Later Kreisel (1959) presented a "modified" notio

From playlist Workshop: "Proofs and Computation"

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Makoto Fujiwara: Bar theorem and bar recursion for continuous functions with continuous modulus

The lecture was held within the framework of the Hausdorff Trimester Program: Constructive Mathematics. Abstract: (joint work with Tatsuji Kawai) Bar induction is originally discussed by L. E. J. Brouwer under the name of “bar theorem” in his intuitionistic mathematics but first formali

From playlist Workshop: "Constructive Mathematics"

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What is a Vector Space?

This video explains the definition of a vector space and provides examples of vector spaces.

From playlist Vector Spaces

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Amir Tabatabai Mining the Surface: Proof mining in the bounded world

The lecture was held within the framework of the Hausdorff Trimester Program: Types, Sets and Constructions. Abstract: A computational flow is a pair consisting of a sequence of computational problems of a certain sort and a sequence of computational reductions among them. In this talk we

From playlist Workshop: "Proofs and Computation"

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Hugo Herbelin: Computing with Markov's principle

The lecture was held within the framework of the Hausdorff Trimester Program: Types, Sets and Constructions. Abstract: Computing with Markov's principle via a realizability interpretation is standard, using unbounded search as in Kleene's realizability or by selecting the first valid wit

From playlist Workshop: "Proofs and Computation"

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What is a metric space ?

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From playlist Topology

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What is space?

What exactly is space? Brian Greene explains what the "stuff" around us is. 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:

From playlist Science Unplugged: Physics

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What is (a) Space? From Zero to Geo 1.5

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From playlist From Zero to Geo

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Metric spaces -- Proofs

This lecture is on Introduction to Higher Mathematics (Proofs). For more see http://calculus123.com.

From playlist Proofs

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What is spacetime?

"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: Special Relativity

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Dimensions (1 of 3: The Traditional Definition - Directions)

More resources available at www.misterwootube.com

From playlist Exploring Mathematics: Fractals

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Vector spaces | Lecture 16 | Matrix Algebra for Engineers

Definition of a vector space. Join me on Coursera: https://www.coursera.org/learn/matrix-algebra-engineers Lecture notes at http://www.math.ust.hk/~machas/matrix-algebra-for-engineers.pdf Subscribe to my channel: http://www.youtube.com/user/jchasnov?sub_confirmation=1

From playlist Matrix Algebra for Engineers

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CGSR Seminar Series | War in Space: Strategy, Spacepower, Geopolitics

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From playlist Center for Global Security Research

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10. The Four Fundamental Subspaces

MIT 18.06 Linear Algebra, Spring 2005 Instructor: Gilbert Strang View the complete course: http://ocw.mit.edu/18-06S05 YouTube Playlist: https://www.youtube.com/playlist?list=PLE7DDD91010BC51F8 10. The Four Fundamental Subspaces License: Creative Commons BY-NC-SA More information at http

From playlist MIT 18.06 Linear Algebra, Spring 2005

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[Lesson 11] QED Prerequisites - Tensor Product Spaces

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From playlist QED- Prerequisite Topics

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Nicolò Zava (3/17/23): Every stable invariant of finite metric spaces produces false positives

In computational topology and geometry, the Gromov-Hausdorff distance between metric spaces provides a theoretical framework to tackle the problem of shape recognition and comparison. However, the direct computation of the Gromov-Hausdorff distance between finite metric spaces is known to

From playlist Vietoris-Rips Seminar

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Column space of a matrix

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From playlist Introducing linear algebra

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CGSR Seminar Series | U.S. National Security Space Strategy: The Cold War to the Present

Talk Abstract At the present time, U.S. government officials are faced with the increasingly complex task of protecting critical national security space infrastructure in a rapidly evolving threat environment. When placed in a historical context, we find that anxiety about space security

From playlist Center for Global Security Research

Related pages

Dialectica interpretation | Logical consequence | Chu space | Linear logic | Inequality (mathematics) | Category theory | Morphism