Subobject classifier

Lecture 5: The definition of a topos (Part 2)

A topos is a Cartesian closed category with all finite limits and a subobject classifier. In his two seminar talks (of which this is the second) James Clift will explain all of these terms in detail. In his first talk he defined products, pullbacks, general limits, and exponentials and in

From playlist Topos theory seminar

Topoi 2: The Subobject Classifier diagram

Topos, topoi, toposes. Previous video 1: https://youtu.be/Ysp7P4wW-zE This is the second video, discussing of the Subobject Classifier in a category of sets. For the followup video, just look at the videos uploaded one, two weeks later. The document used can be found here: https://gist.gi

From playlist Logic

Lecture 4: The definition of a topos (Part 1)

A topos is a Cartesian closed category with all finite limits and a subobject classifier. In his two seminar talks (of which this is the first) James Clift will explain all of these terms in detail. In this talk he defines products, pullbacks, general limits, and exponentials and in Part 2

From playlist Topos theory seminar

Intro to Subsequences | Real Analysis

What are subsequences in real analysis? In today's lesson we'll define subsequences, and see examples and nonexamples of subsequences. We can learn a lot about a sequence by studying its subsequence, so let's talk about it! If (a_n) is a sequence, we can denote a subsequence of (a_n) as (

From playlist Real Analysis

The Definition of a Surjective(Onto) Function and Explanation

The Definition of a Surjective(Onto) Function and Explanation

From playlist Functions, Sets, and Relations

Lecture 11: Sheaves form a topos (Part 2)

In this talk Patrick Elliott proves that the category of sheaves on a site is a topos, by discussing the exponentials and subobject classifier in detail. The notes are already online: The lecture notes are available here: http://therisingsea.org/notes/ch2018-lecture11.pdf. For the genera

From playlist Topos theory seminar

Lecture 13: Higher-order logic and topoi (Part 3)

In this talk James Clift explains how to think about quantifiers in the context of topoi using adjunctions, and more generally how to extract a type theory out of a topos. This provides the means to "cut out" subobjects using formulas, which is in turn the fundamental idea to defining clas

From playlist Topos theory seminar

Definition of a Surjective Function and a Function that is NOT Surjective

We define what it means for a function to be surjective and explain the intuition behind the definition. We then do an example where we show a function is not surjective. Surjective functions are also called onto functions. Useful Math Supplies https://amzn.to/3Y5TGcv My Recording Gear ht

From playlist Injective, Surjective, and Bijective Functions

Topoi 1: Predicates vs. subsets

Topos, topoi, toposes. This is the warmup video for the discussion of the Subobject Classifier in a category of sets, in the next video. The document used can be found here: https://gist.github.com/Nikolaj-K/469b9ca1c085ea4ac4e3d7d0008913f5 Typo: In minute 42, the membership relation on sh

From playlist Logic

AlgTopReview: An informal introduction to abstract algebra

This is a review lecture on some aspects of abstract algebra useful for algebraic topology. It provides some background on fields, rings and vector spaces for those of you who have not studied these objects before, and perhaps gives an overview for those of you who have. Our treatment is

From playlist Algebraic Topology

Prealgebra 1.3a - Subtracting

An introduction to subtraction, the terms and concepts involved, and subtraction as the opposite of addition. Some example problems are carefully worked and explained. From the Prealgebra course by Derek Owens. This course is available online at http://www.LucidEducation.com.

From playlist Prealgebra Chapter 1 (Complete chapter)

Eleftherios Pavlides & Thomas Banchoff - Hinge Elastegrities Shape Shifting - G4G12 April 2016

Named by analogy to tensegrity, maintaining form integrity through tension alone, hinge-elastegrity, maintaining form integrity with elastic hinges, is created by folding and weaving a shape-memory membrane, into a network of rigid members suspended with elastic hinges. The shape-shifting

From playlist G4G12 Videos

What is an Injective Function? Definition and Explanation

An explanation to help understand what it means for a function to be injective, also known as one-to-one. The definition of an injection leads us to some important properties of injective functions! Subscribe to see more new math videos! Music: OcularNebula - The Lopez

From playlist Functions

Functions, Domain, Codomain, Injective(one to one), Surjective(onto), Bijective Functions

Functions, Domain, Codomain, Injective(one to one), Surjective(onto), Bijective Functions All definitions given and examples of proofs are also given. Also discussed the intuition behind the definitions. Hope this makes sense:)

From playlist Functions, Sets, and Relations

Surjective, Injective, and Bijective Functions

This video introduces surjective, injective, and bijective functions.

From playlist Functions (Discrete Math)

Python Programming 18. Functions

This is the 18th in a course of computer science video lessons introducing programming with Python. This lesson explains the difference between a sub procedure and a function. You will learn that, by definition, a function is a sub program that returns a value to the program that called

From playlist Python Programming Step by Step

Definition of an Injective Function and Sample Proof

We define what it means for a function to be injective and do a simple proof where we show a specific function is injective. Injective functions are also called one-to-one functions. Useful Math Supplies https://amzn.to/3Y5TGcv My Recording Gear https://amzn.to/3BFvcxp (these are my affil

From playlist Injective, Surjective, and Bijective Functions

Combining Algos with a Vote - Natural Language Processing With Python and NLTK p.16

Now that we have many classifiers, what if we created a new classifier, which combined the votes of all of the classifiers, and then classified the text whatever the majority vote was? Turns out, doing this is super easy. NLTK has considered this in advance, allowing us to inherit from t

From playlist NLTK with Python 3 for Natural Language Processing

AI creates Image Classifiers…by DRAWING?

In this video, we talk about "Sketch-a-Classifier" released by researchers at the university of London. KEYWORDS 1. Zero Shot Learning 2. Model Regression Networks (MRN) 3. Parametric Model 4. Multilayer Perceptron (MLP) 5. Fully Convolutional Network (FCN) 6. Regression Loss 7. Performa

From playlist Deep Learning Research Papers

Injective(one-to-one), Surjective(onto), Bijective Functions Explained Intuitively

Please Subscribe here, thank you!!! https://goo.gl/JQ8Nys A nice way to think about injective(one-to-one), surjective(onto), and bijective functions.

From playlist Functions, Sets, and Relations