Threads Tagged with tensor Thread / Thread Starter Last Post Replies Views Forum Hi, I am currently making an effort to solve a boundary value problem of electromagnetic field. The problem is as... Dec9-13 07:13 PM buoyant 2 178 Classical Physics Relativity General Relativity by Robert M. Wald ( 1 2) Author: Robert M. Wald Title: General Relativity Amazon Link:... Dec9-13 12:23 PM Lavabug 25 2,286 Physics & Astronomy Textbooks 1. The problem statement, all variables and given/known data Hi, I have a problem calculating the variation of the... Dec9-13 08:58 AM Powertravel 2 121 Advanced Physics Homework Hello Everyone, I came here with a question and hope you can shed some light. We know that Ricci tensor which... Dec7-13 11:15 PM vaibhavtewari 4 202 Special & General Relativity Would there be a direct proof of the energy-stress tensor of general relativity? My lecturer only provides me with a... Dec5-13 11:23 PM WannabeNewton 8 364 Special & General Relativity 1. The problem statement, all variables and given/known data Hi I am reading about some fluid mechanics, when... Dec4-13 03:23 PM Niles 4 211 Calculus & Beyond Homework Given a particular system, how would one construct the stress-energy tensor? I was reading Mallett's paper and the... Dec4-13 09:28 AM WannabeNewton 11 406 Special & General Relativity Should it be added to the Cauchy stress to calculate a "total stress", or it doesn't have such a physical... Dec2-13 10:18 AM Andy Resnick 2 403 Classical Physics Suppose that we have an (n+m)-dimensional tangent space ##T_p^{n+m}## which we decompose into the direct sum of two... Nov28-13 11:12 AM center o bass 0 295 Differential Geometry My textbook (regarding continuum mechanics) has the following identity that is supposed to be true for all tensors: ... Nov25-13 06:20 PM afreiden 1 359 Linear & Abstract Algebra I am not sure if this a right place to ask what is a tensor. I already asked about vectors in Math section, but I... Nov21-13 10:19 PM WannabeNewton 34 1,080 General Math 1. The problem statement, all variables and given/known data Given a square and the respective distension tensor,... Nov21-13 09:56 PM Jalo 0 233 Introductory Physics Homework I am working on Chapter 5.6 of Weinberg QFT book vol1. In page 231 and 232, he said (1,0) or (0,1) field... Nov20-13 09:21 AM m1rohit 2 949 Quantum Physics Given a vector \vec{r}=\begin{bmatrix} x\\ y \end{bmatrix} It's possible to decompose it linearly, so: ... Nov18-13 08:57 PM PSarkar 9 589 Linear & Abstract Algebra Suppose we are given two projection operators H' and H'' such that H' + H'' = 1, i.e. that any vector can be written... Nov18-13 06:18 AM center o bass 0 489 Differential Geometry I have been trying to think about the Levi-Civita tensor in the context of Group Theory. Is there a group that it is... Nov13-13 11:31 AM nateHI 0 320 Linear & Abstract Algebra Hey everyone, I recently learned that my certified genius weird-uncle-who-lives-at-home (IQ over 200 something,... Nov11-13 12:35 PM wavepart7cle 5 605 Calculus Hi, Can someone suggest a book which has worked out examples of how to use the Maxwell Electrostatic stress tensor... Nov3-13 01:09 PM maverick280857 0 221 Advanced Physics Homework Are Ricci flat manifolds analogous to flat space-time ? Further for Ricci flat manifolds does the Riemann tensor... Nov3-13 11:10 AM WannabeNewton 1 368 Special & General Relativity In Carroll's there is a brief mention of how to get an idea about the curvature tensor using two infinitesimal... Oct26-13 09:54 PM TSny 1 247 Advanced Physics Homework If the tensor tympany is loose, the ear drum is also loose. But then, the ear drum will vibrate even by weak sound... Oct24-13 08:12 AM tarekatpf 2 1,081 Medical Sciences I have been reading an introductory book to General Relativity by H Hobson. I have been following it step by step and... Oct24-13 03:36 AM Halaaku 9 415 Special & General Relativity 1. The problem statement, all variables and given/known data Whats up guys! I've got this question typed up in... Oct21-13 10:52 PM Dick 2 392 Advanced Physics Homework 1. The problem statement, all variables and given/known data Hey everyone, So I've got to prove a couple of... Oct21-13 09:41 PM Dixanadu 3 206 Advanced Physics Homework Hello, I am not sure what the first indice in the cauchy stress tensor indicates For example, σ_xy means... Oct15-13 04:16 PM Chestermiller 6 324 Classical Physics Our galaxy is rotating and is charged therefore the choice for the metric is the Kerr-Newman Metric. I want to... Oct13-13 06:52 AM Bill_K 6 382 Special & General Relativity Generally, when we talk about moment of inertia, we talk about rotation and inherently, we talk about moment of... Oct10-13 03:12 PM arildno 9 273 Classical Physics Ok, so I'd like some advice on doing integrals that involve a laplacian and a tensor for example ... Oct7-13 06:09 PM dextercioby 1 385 Calculus I am looking for the Metric Tensor of the Reissner–Nordström Metric.g_{μv} I have searched the web: Wiki and Bing... Oct5-13 11:11 AM Bill_K 5 437 Special & General Relativity hey all! does anyone recommend any books or websites that cover tensor (matrix) properties and explanations of the... Oct4-13 02:21 AM joshmccraney 0 421 Linear & Abstract Algebra 1. The problem statement, all variables and given/known data Hi all, Here's the problem: Prove, in tensor... Oct2-13 04:02 AM vela 5 350 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data Hi guys, I would like to show that if ##t^\mu## is a... Oct1-13 08:47 PM WannabeNewton 15 496 Advanced Physics Homework 0. The problem statement, all variables and given/known data Hi guys, I must show that the trace of the stress... Sep29-13 01:08 AM Dick 12 345 Advanced Physics Homework 1. The problem statement, all variables and given/known data We will see (in Chap. 5) that the magnetic field can be... Sep23-13 05:55 PM thatguy14 17 346 Advanced Physics Homework Another trivial question from me. 1. The problem statement, all variables and given/known data Which (if any) of... Sep22-13 06:29 PM Ibix 2 346 Advanced Physics Homework Is there a way to "visualize" the tensor product of two (or ##n##) vectors/tensors/algebras/etc.? I'm having a lot... Sep18-13 03:32 PM Chestermiller 2 675 Differential Geometry Some define the extrinsic curvature tensor as K_{\mu \nu} = h^{\ \ \ \sigma}_\nu h^{\ \ \ \lambda}_\nu... Sep17-13 10:38 PM lavinia 5 790 Differential Geometry Dirac has equation 3.4 as: x^{\lambda}_{,\mu}x^{\mu}_{,\nu}=g^{\lambda}_{\nu} Shouldn't that have a 4 on the... Sep17-13 01:56 PM Bill_K 4 418 Special & General Relativity I am back again, with more tensor questions. I am getting better at this, but it is still a tough challenge of... Sep16-13 08:48 PM TheFerruccio 12 308 Calculus & Beyond Homework Given the stress tensor σ = {0,2,0;2,0,0;0,0,0} i) Find the principal stresses and their associated directions,... Sep15-13 02:56 PM ArticMage 0 418 General Physics