Book Definition and 999 Threads

In Arnold's book, ordinary differential equations 3rd. WHY Arnold say Tg:M→M instead of Tg:G→S(M) for transformations Tfg=Tf Tg, Tg^-1=(Tg)^-1. Let M be a group and M a set. We say that an action of the group G on the set M is defined if to each element g of G there corresponds a...

hi everyone, I'm electrical engineer student and i like a lot arnold's book of ordinary differential equations (3rd), but i have a gap about how defines action group for a group and from an element of the group.For example Artin's algebra book get another definition also Vinberg's algebra book...

I am reading Paul E. Bland's book, "Rings and Their Modules". I am focused on Section 4.3: Modules Over Principal Ideal Domains ... and I need some further help in order to fully understand the proof of Lemma 4.3.12 ... ... Lemma 4.3.12 reads as follows:My question is as follows: In the...

Hello all. I am studying Thermal Physics from Schroeder's book. I really like this book, but the number of worked examples and solved problems is minimum. Could you please suggest me a complemetary book with worked examples and problems? The ideal book should be similar to Schroeder's, with the...

Homework Statement Show that ##\tanh(z/2) = \dfrac{\sinh x+i\sin y}{\cosh x+\cos y}## Homework Equations Not clear what I'm supposed to use The Attempt at a Solution Tried using the relation of sin and cosine with ##e^{iz}##, and also worked with the expanded ##\sin(x+iy)## and cosine as well...

Hello, I may have to submit an essay on Energy Management and I personally like the topic, because of this I have attended a few talks and conferences where they go over the subject but I feel that maybe a book can go deeper into the material, so I was wondering, do any of you know of any book...

Hi. I just received a copy of Ballentine's "Quantum Mechanics: A Modern Development" ordered from Amazon, after I heard well of it in this site. I'm wondering what edition I've bought: the one I've got has a white hardcover, and its ISBN is 9789810227074. Does someone ever used this edition? Why...

Hello everyone, I've been trying to find an introductory textbook that really introduces biochemistry with a very basic approach. As part of my first year medical courses, I will need to take a few weeks of biochemistry and the textbook that has been recommended is Lodish et al. Molecular Cell...

Hello! About Me: I'm an Electrical And Computer Engineer under graded student. The only physics we learn in the University in which I'm enrolled is Electromagnetics and nothing more. Well in high school we learned Classical Physics but i don't remember anything (Except some of Newton's motion...

1. The problem statement, all variables and given/known I don't understand the proof of the following theorem: Theorem 3.1.1 Let ##g_{ab}## be a metric. Then there exists a unique derivative operator ##\nabla_a## satisfying ##\nabla_a\,g_{bc}=0## 2. Homework Equations After some manipulations...

I’m wanting to write a realistic sci-fi book but there are a few concepts I don’t understand how to apply. I’m not good with physics so what I’m wanting to know is how to calculate what pressure and temperature would be required for sustained nuclear fusion for something comparable to a star...

I have a Dover edition of Louis Brand's Advanced Calculus: An Introduction to Classical Analysis. I really like this book, but find his proof of limit laws for sequences questionable. He first proves the sum of null sequences is null and that the product of a bounded sequence with a null...

I cannot understand this excerpt from a book on quantum mechanics with reference to observables. I understand that the orthogonality theorem causes all values except the "equal" values lead to zero.However what do they mean when they say "if the integrand is finite the integral (29)...

I am 2nd year physics undergrad. Just want to study a bit about materials in my free time. I have no idea about engineering books. Please suggest some good books. Thanks.

I lost my book on Quantum mechanics! It was published in the late 80s or early 90s in England. Title: Quantum Mechanics. The book used algebra with more advanced math in the appendices. If you know the author , please reply. Thanks!

Background: https://translate.google.pl/translate?sl=pl&tl=en&js=y&prev=_t&hl=en&ie=UTF-8&u=https%3A%2F%2Fwww.syllabus.agh.edu.pl%2F2018-2019%2Fen%2Fmagnesite%2Fstudy_plans%2Fstacjonarne-inzynieria-mechatroniczna%2Fmodule%2Frme-1-101-s-matematyka-1&edit-text=(mindless applying of 'algorithms'...

Hi all, I'm looking for a book that talks about civil nuclear technologies (water reactors, molten salt, etc.): - Either to emphasize the beauty of the technology from an engineering point of view. - Or the historical development of the technology (in terms of engineering more than politics ...

Hello everyone, I've been watching the Khan Academy physics lectures and although they're nice (does anyone know a better one?) I'd like to get much deeper into the details of everything. So please if any of you knows a book, preferably available for free, which is really detailed and of an...

Which calculus book self contains experiences in order, and is stable to the max, for all the problems known in the subject? --------------------------------------------------------- I have got confused now. Math history seems to allow knowing all the data on how math formed, for any of a...

Quantum Mechanics of Particles and Wave Fields by Arthur March... Does anyone know of the author? I think I found an error in this book. :(

Hey there! While considering going into foundational issues in QM (reading abou entanglement and Bell's theorems now), I realized I may need a better grasp of QM. I have studied both Griffiths' and Cohen-Tannoudji's (both volumes, excluding the appendices) books. I am not very confident in my...

Alright, I am looking for a good physics textbooks that cover all or most of these contents given below: Measurement Mechanics Oscillations and Waves Thermal Physics Gravitational Field Electrostatic field Magnetic Field Current Electricity Electronics Mechanical Properties of Matter...

What are the best book to study Calculus? And there is a academic book with History of Calculus? I would like recommendations. I appreciate all.

hi guys, i am preparing my self for the calculus 1 2 3 final and i need recommendation about optimization problems theories book or something to help me understand how to solve and understand optimization problems and to solve them. Thanks♥

I'm going to Uni in October and want to get a head with maths for physics NOW so its not so daunting when I am there. What textbooks/resources are an excelent introduction to physical mathematics? Thanks Nathan

Maybe it's explained somewhere in her book, but what do the Hs and *s mean beside some of the problems in Epp's Discrete Math, 4E textbook? Are there any other notations I should make note of in the book as well? Thank-you for your help.

Hi everyone, I will have an intership to do where i will have to use cadence SPB/OrCAD RELEASE 16.6 Anyone a book to advise me to learn this software from scratch ? thanks,

I am taking a course in topology with Gamelin and Greene, Introduction to topology. I would like to have some supplement to extend and give more motivation and explanation. I am quite tired of the "theorem, proof, theorem, proof" pattern. Thank you!

1. I'm trying to calculate work it takes to lift 4 books, and stack them on top of each other in a 20 cm high stack. The problem reports: - 5 books are lying on the ground. They are each: 2kg, 4cm thick. Using the formula for Potential Energy (mgh), my calculations reflect it takes 8J: - Book...

Although the question came to my mind while studying Weinberg's QFT books, the doubt is much more general than that, and is not a doubt about physics, but rather about how to actually study and learn the topic alone from the book. From one point I agree that coming up with this doubt nearly...

Here is the Problem Statement: Book solution My solution My solution and book solution has differed in the first item (marked red circle). Could you please tell which is correct? If I'm wrong, what did I do wrong?

MATH 4300 - Modern Geometry (3) Prerequisite: MATH 3450 with minimum C grade. Topics selected from advanced Euclidean geometry, non-Euclidean geometry, projective geometry. May be repeated once for credit with approval of instructor as subject matter changes. The above paragraph is the course...

Next semester I will be taking Calculus 2 and Multi-variable calculus together and was wondering what textbooks would help me prepare and allow me to become comfortable with the material that will be covered. I have not found a thread that discussed a textbook(s) that would prepare for both, so...

Dear Fellows, I have recently completed the study of Stewart's calculus. Next, I want to read Linear Algebra. I have bought Sheldon Axler's "Linear Algebra done right" textbook. I want to know if my knowledge of calculus is enough to tackle this book or should I first...

Hi there, my name is Leon and I am a physics undergraduate. Recently I decided to dig into the field of particle physics by getting some related books. I definitely will get some books on quantum field theory (Peskin, Scrednick, mandl and shaw...etc), since qft is a framework of particle...

Hello, does anyone know an (more or less) easy differential geometry book for courses in generall relativity and quantum field theory? I'm looking for a book without proofs that focus on how to do calculations and also gives some geometrical intuition. I already looked at The Geometry of...

Hi everyone, I just created this account because it was actually the first time I wanted to ask a question myself, but this forum has helped me a lot in the past with my Physics and Maths related courses. So thank you for that. Going back to the topic...Now that I've completed some of the...

I have a problem with an statement in the book Differential Geometry by Lipschultz(Schaum's outlines) This book difines a coordinate patch as: A coordinate patch of class ##C^m## in ##S\subset R^3## is a mapping ##\vec{x}=\vec{x}(u,v)## of an open set ##U\subset R^2## into S such that: (i)...

Sorry if this is the wrong thread but subject wise it seemed the most appropriate. Are there any books available that take a deep dive into the heady mathematics you guys use here BUT that take the time to tie things back to reality? And I'm talking about something for interested laymen like...

I'm looking for a book to help me understand a project I'm working on measuring the magnetocaloric effect. I'd like to understand a bit more about the link between magnetism and entropy. I'm a third year bachelor student so I've studied no quantum mechanics (yet), but I'm not against doing so if...

Hello PF, I am currently searching for a good book that could give me insight into the computational methods for turbulence. In the lab we work on MATLAB and I already have the data for the flow but I am searching for ways to extract properties from it: flatness, skewness, some averages...

Hello, I am looking for any online supplemental courses to supplement my book reading of Introductory Econometrics 4e by Jeffrey M.Wooldridge. The book is rather terse and jumps around a lot between ideas presented a couple of pages back and forth. I was hoping if anyone knows a good...

Hi everyone, I'm a senior undergrad in an Astrophysics BSc, and I just started my first course in Particle and Nuclear Physics. Our teacher didn't suggest anything as a textbook, and on my own I couldn't find any really relevant/useful book for my course type, and now I'm here, hopefully having...

The image is below. My question is, why he considers ##p' = p## on the RHS of ##(2.5.14)## but not on the LHS, i.e., the sub index on the left ##\Psi## remains ##p'##. Is it a mistake? And he continues on the derivation (not shown here) even considering ##|N(p)|^2## instead of ##N(p')^*N(p)## so...

Mine is Surely You're Joking, Mr. Feynman!

Undergrad physics students, are you taking the physics GRE in April or next fall? We have a contest for you! Big thanks to Cambridge University Press for donating a copy of the newly published 3rd edition of Conquering the Physics GRE! How to win: Post your favorite physics problem you've run...

<<Moderator's note. This question go no answers in the homework forum. I hope it might do better here>> 1. Homework Statement A 415V to 11 kV transformer has a rating of 200 kVA. The winding resistance and leakage reactance when referred to the primary are 0.014 Ω and 0.057 Ω respectively...

By Summer I hope to dissect a fetal pig I'm ordering from the north Carolina biological supply company, I'm looking for a few books, one in depth on pig biology and a Atlas of the pig including the brain. Another book I'm looking for is a microscope usage and selection guide including oil...

I came across this book 'Street fighting Mathematics, The art of educated guessing and opportunistic problem solving' , by Sanjoy Mahaan, published by MIT press. The book talks about how we can guess some property of the solutions of a number of physics and math problems without actually solving...

Hello my friends, I am studying excitability in quantum dot lasers and I see a lot of bifurcation diagrams with saddle node bifurcations, Hopf bifurcations, homoclinic bifurcations, PD bifurcations etc. I know some basic things about non-linear systems but I have never met the notion of...