Threads Tagged with matrices Thread / Thread Starter Last Post Replies Views Forum I need to prove that a 3x3 matrix with all odd entries will have a determinant that is a multiple of 4. This is how... Y 06:42 PM D H 3 124 Precalculus Mathematics Homework 1. The problem statement, all variables and given/known data http://i.imgur.com/0dVsrxc.png 2. The attempt at a... Y 06:23 PM Ray Vickson 1 161 Calculus & Beyond Homework How are convolution matrices and convolution integrals related, they seem to both be related to signal processing but... Nov17-13 04:19 PM MathWarrior 0 374 General Math Lets suppose a 4×4 matrix A has two identical rows with some other 4×4 matrix B. Does that imply there determinant is... Nov15-13 08:45 AM HallsofIvy 4 503 Linear & Abstract Algebra Dear PhysicsForum, We have just treated the Dirac equation and its lagrangian during our QFT course, but we have... Nov12-13 04:37 AM PhilDSP 1 382 Quantum Physics Let V and W be two finite-dimensional vector spaces over the field F. Let B be a basis of V, and let C be a basis of... Nov5-13 10:10 AM HallsofIvy 1 140 Calculus & Beyond Homework aklsdk Oct29-13 11:05 AM D H 1 544 Math & Science Software 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 2 390 Advanced Physics Homework 1. The problem statement, all variables and given/known data This is quite a long problem, and I have most of it... Oct19-13 10:33 PM richyw 2 215 Advanced Physics Homework Basic matrices ( 1 2) for fixed ## m \geq 2 ## let ## \epsilon (i,j) ## denote the mxm matrix ## \epsilon (i,j)_{rs} = \delta _{ir} \delta... Oct17-13 02:51 PM converting1 25 451 Calculus & Beyond Homework Please do not be offended by my literary style. I find thinking about mathematical problems in such a way helps me... Oct15-13 08:01 AM electronicengi 9 525 Linear & Abstract Algebra Hi Everyone, I am trying to draw the function P = cos(A*kx*x +A*ky*y + A*kz*z) + 1i*sin((A*kx*x +A*ky*y +... Oct11-13 11:22 AM mtirmize 0 562 Math & Science Software Pauli matrices ( 1 2) 1. Consider the 2x2 matrix \sigma^{\mu}=(1,\sigma_{i}) where \sigma^{\mu}=(1,\sigma) where 1 is the identity... Oct6-13 10:53 AM George Jones 18 362 Advanced Physics Homework Hi everyone, I have two matrices A and B, A= and B=. I have to proves theoretically that two of the eigenvalues... Oct6-13 12:23 AM brmath 7 684 Linear & Abstract Algebra I posted this question over at the QM page, http://www.physicsforums.com/showthread.php?t=714076 but I realized... Oct4-13 11:53 PM sokrates 3 556 Linear & Abstract Algebra Just going over my linear algebra notes and I've forgotten the formal definition of ## \epsilon(i,j)_{rs} ## I have... Oct3-13 08:09 PM brmath 2 216 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data Find all the values of h and k such that the system: ... Oct2-13 04:10 PM fogvajarash 11 616 Precalculus Mathematics Homework True or False. If true explain or prove answer, and if false give an example to show the statement is not always true.... Oct2-13 03:48 AM vela 6 266 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data Here is the problem: ... Sep26-13 09:54 AM HallsofIvy 11 512 Precalculus Mathematics Homework I read that scalar matrices are the center of the ring of matrices. How would I prove this? Tips are appreciated. It... Sep12-13 11:44 AM Axiomer 1 619 Linear & Abstract Algebra 1. The problem statement, all variables and given/known data Find h so that: -8x + -7y = 7 16x + hy = 14 ... Sep12-13 07:05 AM lendav_rott 2 501 Precalculus Mathematics Homework Hi, The following equations are from linear regression model notes but there is an aspect of the matrix algebra I... Aug30-13 10:47 PM chiro 1 410 Linear & Abstract Algebra Trying to make sense of the following relation: \sum log d_{j} = tr log(D) with D being a diagonalized matrix. ... Aug30-13 06:57 PM dm4b 3 432 Linear & Abstract Algebra Suppose that ##A## is a diagonalizable ## n \times n ## matrix. Then it is similar to a diagonal matrix ##B##. My... Aug20-13 09:54 AM mathwonk 5 557 Linear & Abstract Algebra I am trying to prove that for any two vectors x,y in ##ℂ^{n}## the product ## \langle x,y \rangle = xAy^{*} ## is an... Aug16-13 09:41 PM chiro 4 509 Linear & Abstract Algebra Hi all, I would like to ask about the eigenvalues of adjacency matrices of a simple undirected unweighted graph. I... Aug16-13 04:53 PM simpleton 0 416 Linear & Abstract Algebra I was wondering if anybody can see where I have gone wrong here? I was given the rule, E2(E1A1)=(E2E1)A1, I can't... Aug5-13 03:19 PM AJBMuir 2 408 Linear & Abstract Algebra Hi, I think I need a sanity check, because I've been working on this for a while and I can't see what I'm doing wrong!... Aug3-13 12:11 PM vanhees71 7 593 Quantum Physics Suppose ##A## is a ## n \times n## matrix. Define the set ## V = \{ B | AB = BA, B \in M_{n \times n}( \mathbb{F})... Aug1-13 12:29 AM Office_Shredder 5 587 Linear & Abstract Algebra Hello, I have the following matrix of matrices ... Jul25-13 06:24 PM CompuChip 1 392 General Math If two matrices are similar, it can be proved that their determinants are equal. What about the converse? I don't... Jul24-13 08:56 PM mathwonk 5 753 Linear & Abstract Algebra I have two real symmetric matrices A and B with the following additional properties. I would like to know how the... Jul10-13 04:39 PM Office_Shredder 5 384 Linear & Abstract Algebra If I have two square nonnegative primitive matrices where the Perron-Frobenius Theorem applies how would I calculate... Jul4-13 10:01 PM Simon Bridge 2 334 Linear & Abstract Algebra I am having trouble getting the kraus matrices(E_k)) from a unitary matrix. This task is trivial if one uses dirac... Jun23-13 05:22 PM Henriamaa 0 287 Quantum Physics Is there a way without using the algorithm to find A-1 of a square matrix greater than 2x2? The question we are... Jun9-13 12:04 PM dwn 2 489 Linear & Abstract Algebra Hi everyone, I'm trying to find a general rule that expresses the product of two rotation matrices as a new matrix.... Jun6-13 03:46 PM tiny-tim 1 394 General Math Why are the Pauli matrices multiplied by 1/2 ?? Why are they represented as σ1/2 σ2/2 and σ3/2 and not just ... Jun5-13 03:27 PM lonewolf219 7 396 Quantum Physics Should the right answer to this question(below) be 14 and not 31? because A_{ij}^{k} means number of paths from i to... May29-13 07:51 PM haruspex 3 370 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data A proof of equality between two traces of products of... May28-13 12:23 PM BVM 2 474 Advanced Physics Homework Let A be the set of n \times n matrices. Then the identity element of this set under matrix multiplication is the... May25-13 12:59 AM micromass 1 343 Linear & Abstract Algebra