Invariant theory

Perpetuant

In mathematical invariant theory, a perpetuant is informally an irreducible covariant of a form or infinite degree. More precisely, the dimension of the space of irreducible covariants of given degree and weight for a binary form stabilizes provided the degree of the form is larger than the weight of the covariant, and the elements of this space are called perpetuants. Perpetuants were introduced and named by Sylvester . MacMahon and Stroh classified the perpetuants. describes the early history of perpetuants and gives an annotated bibliography. MacMahon conjectured and Stroh proved that the dimension of the space of perpetuants of degree n>2 and weight w is the coefficient of xw of For n=1 there is just one perpetuant, of weight 0, and for n=2 the number is given by the coefficient of xw of x2/(1-x2). There are very few papers after about 1910 discussing perpetuants; is one of the few exceptions. (Kraft & Procesi ) exhibited an explicit base of the space of perpetuants. (Wikipedia).

Video thumbnail

Introduction

Introduction to this lecture series on perioperative management.

From playlist Perioperative Patient Care _ Demo

Video thumbnail

What is percussive maintenance?

Words and phrases in engineering might not always become layman's terms, but we are certain you have fixed something before with percussive maintenance. video link: Join our YouTube channel by clicking here: https://bit.ly/3asNo2n Find us on Instagram: https://bit.ly/3PM21xW Find us on F

From playlist Engineering Lexicon

Video thumbnail

Lecture 02 Assessment of pulmonary risk part 1

Assessment of pulmonary risk part 1

From playlist Perioperative Patient Care _ Demo

Video thumbnail

Lecture 03 Perioperative management of the diabetic patient part 1

We move on to the perioperative care of the diabetic patient (part 1).

From playlist Perioperative Patient Care _ Demo

Video thumbnail

Lecture One_Preoperative cardiac evaluatiuon

The preoperative evaluation of a patient with cardiac conditions undergoing noncardiac surgery.

From playlist Perioperative Patient Care _ Demo

Video thumbnail

Permutations

http://mathispower4u.yolasite.com

From playlist Counting and Probability

Video thumbnail

Introduction to Derangements

This video introduces the topic of derangements of elements. mathispower4u.com

From playlist Counting (Discrete Math)

Video thumbnail

Underactive thyroid.mov

An general explanation of the underactive thyroid.

From playlist For Patients

Video thumbnail

How To Debunk Perpetual Motion Machines - with Tom Scott

Warning: Contains flashing images. You know those videos showing working perpetual motion machines? They’re fake. Tom Scott helps us explain how to debunk them. Watch his video here: https://youtu.be/EiZU3BvqvP4 Perpetual motion machines are tantalising. Videos of contraptions claiming to

From playlist The four laws of thermodynamics

Video thumbnail

The Impossibility of Perpetual Motion Machines

You can learn more about CuriosityStream at https://curiositystream.com/spacetime PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE Check out the new Space Time Merch Store! https://pbsspacetime.com/ Support Space Time on P

From playlist Space Time!

Video thumbnail

Adam Savage vs The "Perpetual Motion" Machine!

Subscribe for more videos (and click the bell for notifications): http://www.youtube.com/subscription_center?add_user=testedcom Among the artifacts housed at The Royal Society is a curious device purporting to be a perpetual motion machine. The creation of the late British scientist and

From playlist Tested's 10 Most Popular Videos

Video thumbnail

Fin Math L10: The American Put

Welcome to Financial Mathematics. In this lesson we discuss American puts on an asset that does not pay dividends. We will see that, depending on the risk-free rate r, the optimal exercise strategy of an American put may be not at all trivial, and its analytical tractability may be not gua

From playlist Financial Mathematics

Video thumbnail

Why We Want a Perpetual Motion Machine, But Still Can’t Get It

A machine that can run for eternity is exactly what we need...if only it could exist. A perpetual motion machine is impossible, here's why. Could a Dyson Sphere Harness the Full Power of the Sun? - https://youtu.be/jOHMQbffrt4 Read More: An Analysis of A Perpetual Motion Machine https:

From playlist Elements | Season 4 | Seeker

Video thumbnail

Permutation Examples

This video provides four examples of permutations.

From playlist Probability

Video thumbnail

Are perpetual motion machines possible?

A wheel that spins forever; a bird that never quenches its thirst; a clock that never stops ticking, an endless source of free energy. These are but the dreams of inventors striving to make perpetual motion machines, machines that can work forever without any energy input. Are these machin

From playlist Popular Videos

Video thumbnail

Ses 3: Present Value Relations II

MIT 15.401 Finance Theory I, Fall 2008 View the complete course: http://ocw.mit.edu/15-401F08 Instructor: Andrew Lo License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu

From playlist MIT 15.401 Finance Theory I, Fall 2008

Video thumbnail

Why don't perpetual motion machines ever work? - Netta Schramm

Check out our Patreon page: https://www.patreon.com/teded View full lesson: http://ed.ted.com/lessons/why-don-t-perpetual-motion-machines-ever-work-netta-schramm Perpetual motion machines — devices that can do work indefinitely without any external energy source — have captured many inve

From playlist New TED-Ed Originals

Video thumbnail

Can You Believe It? #14 The Perpetual Motion Machine: Can It Exist?

Visit http://ilectureonline.com for more math and science lectures! To donate: http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 We will learn different examples of possible “perpetual motion machine” and can a perpetual motion machine exist? Previous video in

From playlist CAN YOU BELIEVE IT?

Video thumbnail

Adding and Deleting Users on a Perforce Server

In this video we show how to add and delete users from a Perforce server. Additional videos in this series: -Getting Started with Perforce and P4V (https://youtu.be/Yvgxx2vwsRY) -Basic Operations with Perforce (https://youtu.be/_5_LK_0H22I) -Modifying a Perforce Workspace (https://youtu.b

From playlist Working with Perforce and P4V

Video thumbnail

Level 1 Chartered Financial Analyst (CFA ®): Time value of Money (TVM), Part 2

Session 2, Reading 6 (Part 2): An Annuity is a finite set of level sequential cash flows. An Ordinary Annuity has a first cash flow that occurs one period from now (indexed at t = 1). An Annuity Due has a first cash flow that occurs immediately (indexed at t = 0). A Perpetuity is a perpetu

From playlist Level 1 Chartered Financial Analyst (CFA ®) Volume 1

Related pages

Invariant theory