Functors

Effaceable functor

In mathematics, an effaceable functor is an additive functor F between abelian categories C and D for which, for each object A in C, there exists a monomorphism , for some M, such that . Similarly, a coeffaceable functor is one for which, for each A, there is an epimorphism into A that is killed by F. The notions were introduced in Grothendieck's Tohoku paper. A theorem of Grothendieck says that every effaceable δ-functor (i.e., effaceable in each degree) is universal. (Wikipedia).

Video thumbnail

Linear Algebra: Ch 3 - Eigenvalues and Eigenvectors (5 of 35) What is an Eigenvector?

Visit http://ilectureonline.com for more math and science lectures! In this video I will explain and show (in general) what is and how to find an eigenvector. Next video in this series can be seen at: https://youtu.be/SGJHiuRb4_s

From playlist LINEAR ALGEBRA 3: EIGENVALUES AND EIGENVECTORS

Video thumbnail

Jim Gaffigan: Why is Self-Deprecation Funny? | Big Think

Jim Gaffigan: Why is Self-Deprecation Funny? New videos DAILY: https://bigth.ink Join Big Think Edge for exclusive video lessons from top thinkers and doers: https://bigth.ink/Edge ---------------------------------------------------------------------------------- Male privilege is a pretty

From playlist Best Videos | Big Think

Video thumbnail

How To Construct An Equilateral Triangle

Complete videos list: http://mathispower4u.yolasite.com/ This video will show how to construct an equilateral triangle with a compass and straight edge.

From playlist Triangles and Congruence

Video thumbnail

If Corresponding Angles are Congruent, then...?

Link: https://www.geogebra.org/m/hb3xXZeF

From playlist Geometry: Dynamic Interactives!

Video thumbnail

Generalized Eigenvectors

Generalized eigenvectors. Generalized eigenspaces. Generalized eigenvectors corresponding to distinct eigenvalues are linearly independent.

From playlist Linear Algebra Done Right

Video thumbnail

Eigenvalues | Eigenvalues and Eigenvectors

In this video, we work through some example computations of eigenvalues of 2x2 matrices. Including a case where the eigenvalues are complex numbers. We do not discuss any intuition or definition of eigenvalues or eigenvectors, we simply carry out some elementary computations. If you liked

From playlist Linear Algebra

Video thumbnail

14. Influence

Introduction to Theory of Literature (ENGL 300) In this lecture on the psyche in literary theory, Professor Paul Fry explores the work of T. S. Eliot and Harold Bloom, specifically their studies of tradition and individualism. Related and divergent perspectives on tradition, innovation,

From playlist Introduction to Theory of Literature with Paul H. Fry

Video thumbnail

Equilateral Triangles Problem

GeoGebra Link: https://www.geogebra.org/m/f5zgupmz

From playlist Geometry: Challenge Problems

Video thumbnail

A03 Eigenvalues

The method of determining eigenvalues as part of calculating the sets of solutions to a linear system of ordinary first-order differential equations.

From playlist A Second Course in Differential Equations

Video thumbnail

03/14/19 Wei Li

Sparse resultants in differential and difference algebra: an overview

From playlist Workshop on Model Theory, Differential/Difference Algebra, and Applications

Video thumbnail

Eigenvalues & Eigenvectors : Data Science Basics

So what are eigenvectors and why are they important? --- Like, Subscribe, and Hit that Bell to get all the latest videos from ritvikmath ~ --- Check out my Medium: https://medium.com/@ritvikmathematics

From playlist Data Science Basics

Video thumbnail

Preterm labor | Reproductive system physiology | NCLEX-RN | Khan Academy

Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to

From playlist Human anatomy and physiology | Health & Medicine | Khan Academy

Video thumbnail

22. Edward P. Jones, The Known World

The American Novel Since 1945 (ENGL 291) In the first of her two lectures on Edward P. Jones's The Known World, Professor Hungerford begins from the novel's title, asking what counts as knowledge in the novel and why knowledge is central to the story. This leads to related questions: wh

From playlist The American Novel Since 1945 with Amy Hungerford

Video thumbnail

Higher Algebra 6: Derived Functors

In this video, we define and discuss derived functors between derived categories of abelian categories. Additionally we discuss the notion of adjoint functors and Kan extensions. Feel free to post comments and questions at our public forum at https://www.uni-muenster.de/TopologyQA/index.

From playlist Higher Algebra

Video thumbnail

Teena Gerhardt - 3/3 Algebraic K-theory and Trace Methods

Algebraic K-theory is an invariant of rings and ring spectra which illustrates a fascinating interplay between algebra and topology. Defined using topological tools, this invariant has important applications to algebraic geometry, number theory, and geometric topology. One fruitful approac

From playlist Summer School 2020: Motivic, Equivariant and Non-commutative Homotopy Theory

Video thumbnail

Serge Bouc: Correspondence functors

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 Algebraic and Complex Geometry

Video thumbnail

Finding Eigenvalues and Eigenvectors

In studying linear algebra, we will inevitably stumble upon the concept of eigenvalues and eigenvectors. These sound very exotic, but they are very important not just in math, but also physics. Let's learn what they are, and how to find them! Script by Howard Whittle Watch the whole Math

From playlist Mathematics (All Of It)

Related pages

Abelian category | Delta-functor | Monomorphism