
Please post any and all homework or other textbookstyle problems in one of the Homework & Coursework Questions...

Feb2313 09:25 AM
micromass

1 
29,785 
I finally finished my big summer research project. Reviewing how it went, it is clear to me that I lack an...

Jul2414 09:14 PM
Pond Dragon

1 
116 
Hey guys, I'm working on a summer research project right now in diff. geo. I'm at the point where I have to define the...

Jul2314 11:35 PM
Greg Bernhardt

1 
1,114 
Does anybody know nice introductory material for K3 manifold/ surface? Some very basic exposition, maybe hidden in...

Jul2314 11:35 PM
Greg Bernhardt

1 
1,230 
In Nakahara's book, the interior product is defined like this :
i_{x} \omega = \frac{1}{r!} \sum\limits_{s=1}^r...

Jul2214 07:50 PM
JonnyMaddox

11 
1,525 
I wonder if curvature necessarily means space has been removed. The typical example is forming a "curved" surface by...

Jul2214 02:31 AM
WWGD

9 
337 
Hi, I have real problems with the indices here, can someone give me a step by step explanation how to compute stuff...

Jul2114 09:00 PM
JonnyMaddox

4 
305 
I have an object (A) at some altitude above the Earth ellipsoid, and a point (B) on the surface of the Earth.
...

Jul2114 06:56 PM
GreenLRan

0 
180 
(From another site)
I think the answer is no, for ##i: S \rightarrow \mathbb R^n ## the inclusion/restriction, and...

Jul1814 05:48 PM
WWGD

3 
655 
I'm trying to explicitly show that
\varepsilon^{0 i j k} \varepsilon_{0 i j l} =  2 \delta^k_l
I sort of went...

Jul1814 09:11 AM
Emil

2 
624 
Long time reader, first time poster.
Originally, it was my contention that all Lie groups could be written as the...

Jul1714 10:36 PM
Pond Dragon

1 
583 
I need to use a computational software to work on tensorial hermite polynomials. The operations I want to perform are...

Jul914 08:46 AM
parulm

3 
2,193 
Hello, I'm trying to get a hang of the defintion presented in Arfken  Mathematical Methods for Physicists for 3...

Jul814 02:46 AM
electricspit

2 
1,152 
I am working on a paper that provides the following formula for computing radius of curvature at a point on a surface....

Jul414 10:39 AM
mathwonk

1 
2,390 
I'm reading about multlinear algebra and I'm stuck at differential form and outer product. The definitions involve...

Jul414 12:33 AM
WWGD

13 
2,985 
Greetings,
I am attempting to compute geodesic distances on manifolds where structural data have been sparsely...

Jul114 10:15 PM
Greg Bernhardt

1 
1,543 
Hi, I have an exercise whose solution seems too simple; please doublecheck my work:
We have a product manifold...

Jul114 10:15 PM
Greg Bernhardt

1 
1,605 
Suppose we have a foliation of leaves (hypersurfaces) with codimension one of some Riemannian manifold ##M## with...

Jun2714 07:56 AM
Geometry_dude

2 
2,924 
Suppose one has a foliation of a manifold ##M## with codimension one leaves that are all isometric. What is such a...

Jun2714 06:35 AM
Geometry_dude

3 
2,028 
I'm looking to prove the Global Frobenius theorem, however in order to do so I need to prove the following lemma:
...

Jun2614 10:37 PM
Greg Bernhardt

1 
1,779 
A scalar field can be the exact form of a vector field (potential form)? It's make sense?

Jun2614 03:38 PM
Geometry_dude

7 
1,875 
Hello,
I want to find out the 'average distance' between many points on a 2D plain. That is, if you were standing on...

Jun2514 01:17 PM
Nlc11

9 
1,688 
If two orthogonal coordinate systems (xyz and x'y'z') share a common origin, and the angles between x and x', y and...

Jun2514 11:07 AM
D H

16 
1,664 
I am trying to compute the geodesic (or tangent) radius of curvature of the geodesic circle by using the below...

Jun2514 09:33 AM
manushanker20

2 
1,489 
i really lost with this. i see two possibilities:
(1) something like,
\epsilon_{abc}\partial_{a}A_{b}e_{c} with...

Jun2314 12:29 PM
Terandol

4 
1,587 
I recently bought a copy of S. Ramanan's Global Calculus. I skimmed around a bit. Naturally, I was confused when it...

Jun2014 11:51 AM
micromass

8 
1,959 
Is possible to compute indefinite integrals of functions wrt its variables, but is possible to compute indefinite...

Jun1914 04:44 AM
micromass

12 
1,817 
Hello people of Physics Forums,
In my research into transmission lines, I have come across the following function:...

Jun1714 04:59 AM
micromass

3 
1,609 
After watch this video https://www.youtube.com/watch?v=2cga0Ntqr_0, I understood that for study the behavior of the...

Jun1614 01:26 PM
Matterwave

7 
1,793 
First I want to mention that I am not super good at maths and that I wasn't even sure if this was the right sub forum...

Jun1514 10:51 PM
Simon Bridge

1 
1,482 
How do I calculate the symmetry axis of a Hyperbole ?
Is there a formula?
If the Hyperbole is formula :
...

Jun1414 11:26 PM
Simon Bridge

1 
1,507 
I'm relatively new to locally ringed spaces and sheaves. I was aware of them before, but I lacked the mathematical...

Jun1414 05:47 PM
micromass

5 
1,857 
In 2 dimensions
given a scalar field f(x,y)
is possible to compute the line integral ##\int f ds## and area...

Jun1414 01:33 PM
Matterwave

4 
1,646 
The quantity ##\vec{\omega} = \vec{\nabla} \times \vec{f}## is called vorticity and is the measure of the local...

Jun1314 01:09 AM
Jhenrique

8 
1,693 
Hello everyone ,i have captured car positons at differents...

Jun1114 05:39 AM
ramdas

3 
1,722 
Please read the attached file to answer my question. Thanks a lot.

Jun1014 10:44 PM
strangerep

1 
1,723 
If ##\omega## is an exact form ##( \omega = d\eta )## and ##\Omega## is the region of integration and ##\partial...

Jun1014 09:58 PM
Matterwave

1 
1,543 
I am making a Geometric model for VESPR theory, which states that valence electron pairs are mutually repulsive, and...

Jun814 08:52 PM
P. Love

3 
2,430 
Exist circulation in a system/circuit/vector field/anything where the path of circulation is open?
Is possible to...

Jun814 05:39 PM
Matterwave

5 
1,744 
While reading about sheaves, I came across a beautiful definition of a manifold. An ##n##manifold is simply a locally...

Jun814 03:54 PM
micromass

3 
1,666 
Hello,
I am a novice to manifolds and higher dimensions. Could you recommend a good introductory book(s) or web...

Jun714 12:30 AM
WWGD

14 
1,971 