Text Definition and 558 Threads

Hello everyone, I am making an RSA algorithm (cryptography) with my little knowledge and I am having serious problems with the reading of the text. I am making it with a simple text reading (no raw format) and the main problem is the length of each line. For example in this text...

Some time ago I posted the following: "Can someone give me an idea of how to include (the scan of) a small diagram - say 1/4 to 1/3 of the size of an A4 page (thus not the whole page) - into a post - in such a way as the diagram is visible to the reader - that is he/she does not have to...

This experiment is based on a Scientific American article from April 14, 2007 ( http://www.arturekert.org/sandvox/quantum-eraser.pdf ) or ( http://www.angelfire.com/folk/thegrieves/transfer/200705.pdf in renderable text). The article demonstrates how to set up an experiment that illustrates...

I was searching around the internet for a procedure to read lines of a text file into a JavaScript array. Most of the procedures I saw used Ajax, which I don't understand yet, so I'll refrain from trying to cut-and-paste code that I don't understand. I found this...

I'm majoring in physics and I'm about to take a course entitled Mathematical Methods of Physics. It covers Sturm-Liouville Theory, Integral Transforms, Fourier Analysis and PDEs. I read in the thread "So you Want to be a Physicist" that ”Mathematical Methods in the Physical Science” by Mary...

Hey guys I've been thinking for the summer I'd like to get a bit of an introduction to QM. I'll be doing research so something that I can just read through and do some problems every now and then is great. My math background so far is most of the Calculus sequence (haven't done the vector...

Latex "help" needed, about text between 2 images I'm having troubles to place a text between 2 images. The code looks like this: \begin{figure}[ht] \begin{minipage}[b]{0.45\linewidth} \centering \includegraphics[width=\textwidth]{vvalue} \caption{value1} \label{test1} \end{minipage}...

I just bought a new Acer monitor and the text, such as what I'm typing right now, is moving very slightly in a wavy motion. Actually, I just noticed it's only wavy in the middle part of the screen. I'll use lines to show which part it's wavy at...

An introductory text is preferable. Topics relevant (not a deal-breaker if not covered): Poisson process, Markov chains, renewal theory, models for queuing, and reliability. Also, in the future I'd like to dabble in stochastic calculus, but my background in measure theory is non-existent. I've...

i'm a mechanical engineer student, 1st year. currently follwing erwin kreyzig, I am intersted in solving complex type of problems but couldn't find much in erwn kreyzig. it has only beginninng level easy questions. is there a book that you can suggest which has tough and complex...

Hey everyone, I was hoping someone could point me towards a good General Chemistry textbook. I just finished General Chemistry I last semester, and I'm taking part II next semester. We didn't have a required text for the class (nor did we even really need one), but I want to get a good...

I have a Ti-89 titanium and its not allowing me to enter text into an equation without writing over the equation. Is there a way I can change this? It seems like I could do this before, I thought maybe I accidentally pressed something without realizing it.

I can't think of an elegant way to do it, and yet I need to, somehow. If you have a period followed by a space, then you know you're at the end of a sentence. Same with a period followed by a quotation marks (in the American way of writing. In the British way, they keep the quotation marks...

I can't figure out why my text file isn't being found. I have it saved in the same location as my project. Anyone know how I can set where XCode checks for an fstream object? int main (int argc, char* const argv[]) { std::fstream file1("CollegeIsAWaste.txt", std::ios_base::in)...

I was recommended Rudin's "Principles of Mathematical Analysis" as a text that assumes you know nothing and takes it from there. And make no mistake, I think it's an amazing book. I've learned techniques and overcome some hurdles all on my own that make me feel quite good about myself. So this...

For one of my physics classes (oscillations, waves, quantum mechanics) we use Young and Freedman University Physics 13th edition. However, the lectures given by the professor are usually more difficult/ on a higher level than the textbook. For example, right now we're learning about...

As a high school student, I enjoy studying mathematics on my spare time. Having recently worked through a textbook on vector calculus, I am in need of a textbook that will give me a solid introduction to differential equations. Any suggestions will help my search; however, I would prefer a...

Hi all, I have a problem I'm trying to solve. I have a code that has written a simple ascii text file like this: write(ilun_out, '(E23.15,A,E23.15,A,E23.15,A,E23.15)' x, ' ', y, ' ', z, ' ', rho So this provides a nice looking ascii file with four columns, separated by a small space. Now...

Hi PF, looking for a recommendation on a mathematically rigorous text on statistics (and perhaps probability). I have a decent amount of knowledge on linear & abstract algebra and calculus and analysis, so I don't mind if it uses them. What I don't want is a text that fails to prove its theorems...

Currently taking an electronics course for physics students and the text we are using is electronics for scientists and engineers by Plonus. Unfortunately, the book seems to have a lot of errors and is just terrible overall. I've heard of the Art of Electronics by H&H, but it seems more of a...

I've arrived at a solution for a problem, but it doesn't match the back of the book. It's a pretty involved problem, so I don't want to replicate it here, but I feel like my work is pretty solid. Does anyone know if there's an errata available for Marion and Thornton's "Classical Dynamics of...

It seems like Zee lost a trace in his new GR text, but I am sure it is me confusing things. First, he establishes: log\: det\: M = tr\: log\: M Then, differentiating: (det\: M)^{-1} \: \partial (det\: M)=\partial (tr\: log\: M)=tr(\partial\: log\: M)=tr(M^{-1}\partial M) Then he applies...

I have read a lot of stuff on Quantum Mechanics and there seem to be a lot of outlandish theories on the web mixing QM with every religion in a search for god as the great observer. I would really love to get my hands on a good college level textbook that explains the more supported theories...

See attached scanned pages of page 118(left side) and page 125(right side) of Antenna Theory by Balanis. On the left side, it is just some basic EM where \nabla\times \vec E=-\frac{\partial \vec B}{\partial t}\;\Rightarrow\;\vec E=-\nabla V-\frac{\partial \vec A}{\partial t} Then to Lorentz...

What is the best intro to QM? I was settled on Griffiths, but it seems there are only two kinds of people in this world, those who recommenced Griffiths, and those who strongly don't recommended it. I'll give a bit of background, so I can get the best possible recommendations. I'm...

Hey everyone, I really do hope I'm posting in the right section new forums can be overwhelming sometimes so it's hard to know. I'm looking to start learning physics, I have little to no experience in the subject and was wondering what textbooks I should buy, I want to self teach myself from a...

Hello MHB, I want to start reading Complex Analysis. I have never read any textbook on this subject. I have good background in Algebra, Linear Algebra, Point-set Topology and Real Analysis. Right now I want to prepare for the subject GRE in Mathematics so please suggest a book keeping that i...

Hi everyone. I've had my BS in physics for 5 years now, and I'm looking to brush up on some areas that I never covered in my undergrad career. Specifically, I'm looking for an undergrad computational physics textbook that I could use to work through some "real-world" physical examples and...

Hey all, so my university's game theory course never runs due to lack of students signing up for it, so I'm taking it upon myself to learn what I can about this fascinating subject. I'm specifically looking for a game theory text which is: a) introductory b) for upper-level math undergraduates...

I'm looking for a good text or online source that can take me through radiometry at an undergraduate level. I'm interested in drill type problems that can help me sort out the different quantities intensity, irradiance, exitance, radiance and their spectral counterparts. Also, solid angle vs...

Hi everyone, I would like to ask if anyone can recommend a quantum mechanics textbook as reference for a condensed matter theorist. I am reading a book that requires material I do not remember seeing in my (voluminous) grad QM text (Shankar). It seems to me all quantum textbooks have their...

I'm in the market for an intro book covering airborne and ground radar fundamentals. The following two books are the top sellers on Amazon, but top seller doesn't mean best quality (Stewart Calculus, etc.). An Introduction to Airborne Radar by Stimson Principles of Modern Radar: Basic...

Has anyone read the Bhagvad Gita ? What is it like ? What does it talk about ? What are your views on the text ?

I'm looking for a linear algebra textbook slightly above beginner level to get a good grasp of certain topics. Specifically, I want to understand exactly what the determinant of a matrix is and its relation with volume, linear dependence/independence, etc I recently figured out how to get...

Hello all, I'm working through a majority of the problems in "A First Course in Wavelets with Fourier Analysis" and have stumbled upon a problem I'm having difficulty with. Please view the PDF attachment, it shows the problem and what I have done with it so far. Once you have seen the...

So I believe I have a very good understanding of QM as it was taught at the undergraduate level. I have some downtime next semester so I wanted to take it a step further and understand it at a much deeper level. Would it be better to read through Dirac's famous text or Principles of QM by...

Hi, I am interested on learning QED on my own. I have a good background in QM. What are the best textbook that would you recommend? C

What is a good text for someone starting off in physics. preferably available for free or low cost

I'm (again) tired of being given formulas that seem to come from nowhere in the book I'm currently using (Moran/Shapiro). Is there a more math-intensive basic thermodynamics text out there that actually handles things like derivations of specific heats from partial differential equations? It's...

I am a high school physics teacher looking to teach an astronomy class for juniors and seniors next year. I was wondering if there are any stand out texts for this. Thanks.

So I have been using a combination of Linux shell and Fortran to process big output files from my simulations. But I realized that it would save me a lot of time and effort if I can learn a text processing language. I got different recommendations and it seems that AWK and perl are on the...

Hello, In Calculus 2, sequences and series are introduced and do I have to say that most of the examples are trivial and even the exercises are either trivial or those that require experience. I hope someone can suggest a book where one can learn solving not-so-obvious series problems that...

I'm creating this thread for any major difficulties I come across in How to Prove It: A Structured Approach, 2nd edition by Daniel J. Velleman. This is a self-study (with any assistance if I can get it). Homework Statement The problem is to analyze the logical form of the given statement...

Hello. I plan on doing independent study on the Stochastic Process and time series models. I have already learned two semesters worth of statistics (Mathematical Statistics and Applications by Wackerly, Mendenhall and Scheaffer). And I have taken a semester of multiple regression models. I...

Turning a text based problem into a number based problem I can solve these types of questions such as: 4(3x-5)=5x+2(x+15) but when a question is worded something like: "The second of three numbers is 1 less than the first. The third number is 5 less than the second. If the first number...

Our class doesn't use a textbook and our professor doesn't give out much notes. Just handouts with problems on it. So I wanted a textbook to accompany my studies but don't know which is the best/rigorious general chemistry textbook.

I'm contemplating the possibility of teaching either a regular probability and statistics course or maybe even the AP Stats course at my high school next year. However, I only took the first semester in statistics at the junior level in college (used multivariable calculus); that means I got...

Hey I have a text file with 2 blocks of Data Example Numbers 1: 1,2,3,4,5,6 7,8,9,10,11 ... Numbers 2: 92,93,94,95,96 97,98,99,100,101 ... How would i use FORTRAN to read the text file and output in a column and row format.. Example 1 92 2...

Having gone through Hailliday-Resnich mechanics, I'm looking for something a step above this. I'm taking second year mechanics next year, but I'd like to get a head start on it (considering that I move faster on my own, anyway). I'm looking at either Kleppner, or Taylor right now, but I'm...