Connection Definition and 498 Threads

I am trying to set up remote desktop. I have only one account with user name "FirstName LastName" with no password. I followed all instructions, and have "username" for accessing my computer. But, it doesn't work! I have used 3rd party software (I forgot it's name but it's pretty...

http://www.annomundi.com/history/trojan_london.htm The early inhabitants of Britain, who arrived more than a thousand years before the Roman invasion, were the scattered remnants of the fallen city of Troy. They founded a city on the Thames and called it "Troia Newydd" (New Troy) which later...

Hi Is there any connection between creativity and level of order? wikipedia - Creativity (or "creativeness") is a mental process involving the generation of new ideas or concepts, or new associations of the creative mind between existing ideas or concepts. so, will it create chaos -...

I have a photodiode/amplifier module, which has a D-sub connection for the power supply. The manufacturer sells a power supply, but it is out of my budget range, and the lab only has standard laboratory PSU's (+V,-V, gnd). Is there any connections so that I can use this module with my power...

Hey Everyone, I'm reading a paper by Claude LeBrun about exotic smoothness on manifolds and he is talking about a connection between polynomials and groups that I am not familiar with (or at least I think that's what he's talking about). He's creating a line bundle (which happens to be...

I am trying to include salt water in my Rube Goldberg project. Instead of the wires that connect a motor simply being continuous, I want to bridge a connection through salt water. Meaning, but one wire, put both ends in the solution so that the connection still works. But its not working. Are...

Hey, I was playing around with Gamma and plotted it as shown in the attachments. I noticed that the area swept out was similar to phi (in spherical coordinates.) So I started wondering if this could have any really relevance. So I looked at it more closely and was able to find length...

According to this book I'm reading these groups are said to be equivalent and I am trying to better understand how this is so. The generators of SU(N) are N^2-1 traceless complex anti-hermitian matrices. The group is over the real numbers and is N^2-1 dimensional. On the other hand we have...

if F is any function and H is the hamiltonian, then the Poisson Bracket of F and H, is given by: [F,H] = dF/dt - \partialF/\partialt Can someone show me how the right side of this equation comes about? Also how can the normal derivative of F w.r.t t be different from the partial of F...

Dear all, i am possible to do experiment on the application of solar cell and i have run into several problems so i need to seek advice from all the experts in here. I have several DC loads include: 1 x Cooler fan (12V, 0.25A) 1 x cooler fan (12V, 0.2A) 2 x rechargable AA size battery...

According to the Correspondence Principle Discrete Quatum levels become Continous Classical levels when n goes to infinity, meaning that the difference between two adjacent level goes to zero. Questions; 1) What does infinity mean here? How for do we to go from the center of the atom...

Hi I'm looking for a simple definition fo the affine connection because I can't understand it's meanning , that meanning that givse the mathematical formula of the affine connection a life , You could call it the physiacl meanning . For your knowledge my friend , I'm very good with the...

Might there be a similarity between Dyson's equation and Heisenberg equation? (It's just a feeling, nothing based on arguments.) Both describe how a system (density matrix or Green's function) behaves in time. Both require knowledge of the intial system at time t=0 and the potential acting on...

just after cleaning its CPU fan because of its noise...when a open many sites and navigate and when i login to any site (it happenned 3 times while signing into yahoo), a security alert says "information you exchange with this site cannot be viewed or changed by others. However, there is a...

I have noticed an apparent correlation between two seemingly unconnected phenomena, but I do not have the mathematical ability to prove the connection. I was wondering what a rolling wheel would look like at relativistic speeds. To investigate this I created a java simulation that solves the...

Hello, I opened up an AC to DC power supply today to see where they connected the Earth ground wire and I found that it's connected to the negative side (labeled V-) of the DC output. V- is also connected to one side of the transformer's output. Why would they connect the Earth ground wire in...

[SOLVED] computing affine connection I've got a task of computing the components of the Riemann tensor, starting from the given Robertson-Walker metric g=-dt\otimes dt + a^2(t)\Big(\frac{dr\otimes dr}{1-kr^2} + r^2\big(d\theta\otimes d\theta + \sin^2\theta d\phi\otimes d\phi\big)\Big) When...

why torsion free metric compatible connection ? Why in conventional GR we choose a torsion free, metric compatible connection? Can that be derived from somewhere like physical principles/postulates or it's just a the simplest convenient choice (many terms drop from equations) that produces...

Hello, When is it OK to connect the shield wire of a loadcell to the 0V rail vs chassis ground? I have seen it connected to the 0V rail but other sources seem to indicate that it should be connected to chassis ground. Any thoughts/advise? Thanks

I am supposed to write a program using C++ that will take data collected by two separate DAQ cards and save them as either a text or spreadsheet file. Now, I'm still new at C++ and I do not even know where to begin. How am I even supposed to make a connection between Visual Basics and the DAQ...

Homework Statement Can someone explain what they mean at the bottom of the page "by swapping derivatives with respect to a and x' " and in general how they arrived at equation 3.17? Homework Equations The Attempt at a Solution

Can anyone tell me what the following circuit connection means? It's the arrow going from VEE to the 50k resistor. Thanks. http://img442.imageshack.us/img442/8861/picture1ry3.png

Homework Statement I am confused about this question and probably the connection in general. When we only have two independent coordinates here what do the three indices in \Gamma ^a_{bc} stand for? I found the metric for this space, but every formula for Gamma has indices a,b,c and I do...

Homework Statement I am trying to show that the connection \Gamma^a_{bc} is equal to 0 when the metric g_ab is diagonal. Will the formula \Gamma^a_{bc} = 1/2 g^{ad}(\partial_bg_{dc} + \partial_cg_{bd} - \partial_dg_{bc}) be of use? How can I manipulate that equation and use the fact that...

I know that if I want my muscles to grow stronger, I should eat lot of protein containing food, apart from only training hard. And taking protein precisely after the training and before sleeping is probably most effective. Does the way I eat also have an effect on my ability to learn new...

As usual, I don't know if this is the right place, but, I have been thinking, and if samarians ( if that's spelt right ) were right about planet x, then it should be near us soon in a few years or a few decades, now, if this is true, wouldn't that explain that if the ufo sightings are true...

What is the relationship between friction and heat?

Homework Statement Does a torsion module M imply M is cyclic? Or does it imply M is finitely generated? I think cyclic implies torsion module. What about the reverse? The Attempt at a Solution I think there is a connection but don't see it.

hi y'all after lurking a lot on this forum and searching for the answer I've got something to ask, if you get that all the non trivial zeros do lie on 1/2+ib then what? I've read a book on the riemann hypothesis but i really don't get the link between the zeros of zeta(s) and the prime counting...

I tried to obtain refraction of light by sun's gravity by substitution of sun's gravitational field by aether with different speeds of light. I do not get right result. Where I am wrong? For light which travel close to the sun by direct trajectory, I get the following speed of light in...

Is there a particular reason why the probability density distribution function of atomic orbitals bears a similarity to the modes on a circular membrane? Is this just a coincidence? Is it not actually that similar?

I posted pics a few weeks back of the new puppy, we are still looking for an official name, current working name is weeone. Here is Weeone looking over the back of our ex-male cat Chunky. Chunky has become more social since Weeone showed up. He has been pretty reclusive, to the point that he...

Please click on the image to make it bigger. http://img105.imageshack.us/img105/5413/pinconnectiontw4.th.jpg At pin connnection G shouldn't there be two support reactions just like the pin connection at A? If the solution in the diagram is correct why is it correct?

I have worked out how the connection coefficients enter into the expression for the Laplacian, for example, in different coordinate systems. Does anyone have general expressions for how the coefficients enter into other expressions such as divergence and curl and grad and so on? Thanks in...

SR uses spacetime diagrams which is what is used to solve hyperbolic and parabolic PDEs but what is the connection between SR and PDEs? Are there PDEs in SR? I have done a first course in SR using Taylor and Wheeler but don't seem to recall any.

I have Christoffel symbols for a metric and I want to find the connection 1-forms. I have the relation: w(^i j)=Chr(^i j k)*dx(^k) w: conn. 1-form Chr: Christoffel symbols But Christoffel symbols do not share the symmetries of the conn. 1-forms. Do you know any way to make this...

I am in Gr.11 chemistry, and I am suppose to study and do a report and presentation on anything related to chemistry. My teacher suggested that I do something that I am interested in and then relate it to chemistry. So one thing that I love is music, and I am kind of stuck in terms of how i can...

I have a small network at home (with all machines running Windows XP and norton internet security). One machine is connected to the internet and shares the connection with the rest. I find it odd that all machines have a decent speed when accessing the web, except the one that serves the...

I'm reading Carlo Rovelli's book "Quantum Gravity". In the second chapter he writes down the Plebanski action by performing a decomposition of the complex Lorentz algebra into self-dual and anti-self dual parts, i.e. so(3, 1, C)=so(3, C)\oplus so(3, C). I sort of appreciate this fact and what it...

Science and the arts -- a connection? On January 4th James Palmer, a professor of optics at the UA, died from Cancer. What was interesting about Dr. Palmer was that he was not only an outstanding engineer (including winning the NASA Group Achievement Award), but he was also an outstanding...

Hi, I've MSN Messenger 7.x but I can't connect anymore. I'm behind the Windows Firewall (which I temporarely have disabled) and I'm connecting to the internet with a router, which has a built-in firewall. Can somebody help? Please.

Ok , during my study , I read that the bodies which are rotating spherically symmetrically do not emit GW;s as in don't dent the spacetime memberane...same is with the bodies moving with uniform velocity ...why is that??...has it something to do with conservation of angular momentum??:blushing:

can anybody tell me whether nanotechnology is related to materials technology or not?

im given: u=arcsin(x)+arccos(y) v=xsqrt(1-y^2)+ysqrt(1-x^2) and i need to find the functional connection between u and v. i know that: v'_x/u'_x=dv/du and i have got: dv/du=sqrt(1-x^2)sqrt(1-y^2)-xy now i need to show the rhs as a function of v or u, obviously of v should be much...

I was reading through a proof of the summation formula for a sequence of consecutive squares (12 22 + 32 + ... + n2), and the beginning of the proof states that we should take the formula: (k+1)3 = k3 + 3k2 + 3k + 1 And take "k = 1,2,3,...,n-1, n" to get n formulas which can then be...

http://www.ed.gov/policy/elsec/leg/esea02/pg112.html Of course a parent would have to know about this before requesting that their private information be protected. To me this wreaks of sleeze. The default should be to protect privacy; especially when it comes to children.

I don't know how to start solving attached problem (3.126 from Irodov) because I can't identify any series or parallel connection between capacitors. I came to an idea that I should "break" capacitor C3 into two capacitors and then get two series and one parallel connections. Any ideas?

What do fossil fuels have to do with energy?

hello, i have met with a problem. please help me. A Lie group,with a left-invariant Riemannian metric, i want to compute the connection compatible with the Riemannian metric. C(ij, k) are the structure constants, g(ij) are the metric, then how to compute the Riemannian connection in terms of...

I was wondering if anyone knows the relationship between lung mass and body mass. I'm having a hard time finding these values. Thanks.