Types of functions | Cardinal numbers

Cardinal function

In mathematics, a cardinal function (or cardinal invariant) is a function that returns cardinal numbers. (Wikipedia).

Video thumbnail

Introduction to the Cardinality of Sets and a Countability Proof

Introduction to Cardinality, Finite Sets, Infinite Sets, Countable Sets, and a Countability Proof - Definition of Cardinality. Two sets A, B have the same cardinality if there is a bijection between them. - Definition of finite and infinite sets. - Definition of a cardinal number. - Discu

From playlist Set Theory

Video thumbnail

Determine if a Relation is a Function

http://mathispower4u.wordpress.com/

From playlist Intro to Functions

Video thumbnail

What is a function?

This video explains what a mathematical function is and how it defines a relationship between two sets, the domain and the range. It also introduces three important categories of function: injective, surjective and bijective.

From playlist Foundational Math

Video thumbnail

Functions of equations - IS IT A FUNCTION

👉 Learn how to determine whether relations such as equations, graphs, ordered pairs, mapping and tables represent a function. A function is defined as a rule which assigns an input to a unique output. Hence, one major requirement of a function is that the function yields one and only one r

From playlist What is the Domain and Range of the Function

Video thumbnail

Using the vertical line test to determine if a graph is a function or not

👉 Learn how to determine whether relations such as equations, graphs, ordered pairs, mapping and tables represent a function. A function is defined as a rule which assigns an input to a unique output. Hence, one major requirement of a function is that the function yields one and only one r

From playlist What is the Domain and Range of the Function

Video thumbnail

How to determine if an ordered pair is a function or not

👉 Learn how to determine whether relations such as equations, graphs, ordered pairs, mapping and tables represent a function. A function is defined as a rule which assigns an input to a unique output. Hence, one major requirement of a function is that the function yields one and only one r

From playlist What is the Domain and Range of the Function

Video thumbnail

Pre-Calculus - Vocabulary of functions

This video describes some of the vocabulary used with functions. Specifically it covers what a function is as well as the basic idea behind its domain and range. For more videos visit http://www.mysecretmathtutor.com

From playlist Pre-Calculus - Functions

Video thumbnail

How many functions are there?

The answer is: a lot of them! In this video, I show that F(R), the set of functions from R to R, has the same cardinality as P(R), the set of subsets of the real numbers, which, in a previous video, I’ve shown to be much bigger than R. This is set theory at its finest :)

From playlist Set theory

Video thumbnail

Does Infinite Cardinal Arithmetic Resemble Number Theory? - Menachem Kojman

Menachem Kojman Ben-Gurion University of the Negev; Member, School of Mathematics February 28, 2011 I will survey the development of modern infinite cardinal arithmetic, focusing mainly on S. Shelah's algebraic pcf theory, which was developed in the 1990s to provide upper bounds in infinit

From playlist Mathematics

Video thumbnail

The Cantor-Schroeder-Bernstein Theorem -- Proof Writing 24

⭐Support the channel⭐ Patreon: https://www.patreon.com/michaelpennmath Merch: https://teespring.com/stores/michael-penn-math My amazon shop: https://www.amazon.com/shop/michaelpenn 🟢 Discord: https://discord.gg/Ta6PTGtKBm ⭐my other channels⭐ Main Channel: https://www.youtube.

From playlist Proof Writing

Video thumbnail

Cardinality of the Continuum

What is infinity? Can there be different sizes of infinity? Surprisingly, the answer is yes. In fact, there are many different ways to make bigger infinite sets. In this video, a few different sets of infinities will be explored, including their surprising differences and even more surpris

From playlist Summer of Math Exposition 2 videos

Video thumbnail

Coprime Probabilities, and the Riemann zeta function

The principal of inclusion-exclusion is proven, before establishing that the greatest common divisor or two randomly chosen positive integers is 6 over pi squared. My Twitter: https://twitter.com/KristapsBalodi3 Intro:(0:00) The principal of inclusion-exclusion:(1:29) A related lemma:(13

From playlist Miscellaneous Questions

Video thumbnail

How many continuous functions are there ?

Cardinality of continuous functions Have you ever wondered how many continuous functions there are out there? Surprisingly not so many! In this video, I show that there are as many continuous functions as real numbers. This is surprising because there are many more functions than real nu

From playlist Set theory

Video thumbnail

Cardinality -- Proof Writing 22

⭐Support the channel⭐ Patreon: https://www.patreon.com/michaelpennmath Merch: https://teespring.com/stores/michael-penn-math My amazon shop: https://www.amazon.com/shop/michaelpenn 🟢 Discord: https://discord.gg/Ta6PTGtKBm ⭐my other channels⭐ Main Channel: https://www.youtube.

From playlist Proof Writing

Video thumbnail

The Green - Tao Theorem (Lecture 4) by D. S. Ramana

Program Workshop on Additive Combinatorics ORGANIZERS: S. D. Adhikari and D. S. Ramana DATE: 24 February 2020 to 06 March 2020 VENUE: Madhava Lecture Hall, ICTS Bangalore Additive combinatorics is an active branch of mathematics that interfaces with combinatorics, number theory, ergod

From playlist Workshop on Additive Combinatorics 2020

Video thumbnail

ch2 2: polynomial interpolation, Lagrange form. Wen Shen

Wen Shen, Penn State University. Lectures are based on my book: "An Introduction to Numerical Computation", published by World Scientific, 2016. See promo video: https://youtu.be/MgS33HcgA_I

From playlist CMPSC/MATH 451 Videos. Wen Shen, Penn State University

Video thumbnail

Sanjay Mishra: Preservation of Properties during Topological Equivalence of Function Space

Sanjay Mishra, Lovely Professional University Title: Preservation of Properties during Topological Equivalence of Function Space The study of convergence of sequence of functions is the most important and active area of research in theoretical mathematics that solve several problems of app

From playlist 39th Annual Geometric Topology Workshop (Online), June 6-8, 2022

Video thumbnail

Determine if the equation represents a function

👉 Learn how to determine whether relations such as equations, graphs, ordered pairs, mapping and tables represent a function. A function is defined as a rule which assigns an input to a unique output. Hence, one major requirement of a function is that the function yields one and only one r

From playlist What is the Domain and Range of the Function

Video thumbnail

Real Analysis Ep 5: Cardinality

Episode 5 of my videos for my undergraduate Real Analysis course at Fairfield University. This is a recording of a live class. This episode is cardinality of sets. Class webpage: http://cstaecker.fairfield.edu/~cstaecker/courses/2020f3371/ Chris Staecker webpage: http://faculty.fairfiel

From playlist Math 3371 (Real analysis) Fall 2020

Related pages

Algebraic extension | Algebraic structure | Linear subspace | Vector space | Separable space | Transcendence degree | Countably generated space | Topology | Cardinal characteristic of the continuum | Beth number | Ideal (set theory) | First-countable space | Index of a subgroup | Base (topology) | Disjoint sets | Regular cardinal | Total order | Cichoń's diagram | Lindelöf space | Ordinal number | Free module | Field extension | Dense set | Dimension (vector space) | Open set | General topology | Cardinal number | Set (mathematics) | Function (mathematics) | Field (mathematics) | Null set | Family of sets | Meagre set | Codimension | Ring (mathematics) | Aleph number | PCF theory | Cardinality | Coset | Antichain | Neighbourhood system | Degree of a field extension | Cofinality