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

Feb2313 09:25 AM
micromass

1 
26,498 
Hello,
I need help. The topic is a gradient in spherical coordinates. In cartesian it is clear but in spherical...

Aug908 05:00 PM
deiki

3 
22,151 
I am confused on what is meant by the modulus of a Riemann surface. I have done some very quick searches through my...

Jun412 11:04 PM
mathwonk

9 
1,261 
I have been working on something in my spare time and I have to graph the particle's motion in three dimensions...

May1511 05:40 PM
theobserver

4 
3,845 
I am trying to turn a 3D parametric equation into a vector field for an experiment, but I am not having much luck. =...

May1711 03:54 AM
Unrest

2 
1,694 
Let h = det h_{alpha beta}. The number of dimensions is not necessarily four. Show that
\
delta h is the...

Jan1606 05:07 AM
dextercioby

1 
3,440 
Hey guys.
I am trying to find a shape that suits my needs.
The amount of vertexes can be any, but the fewer the...

Jan612 09:03 AM
Edgardo

5 
1,117 
I would like to explore writing differential geometry in matrix format and was wondering if any of the experts here...

Nov2209 10:27 AM
haushofer

3 
1,403 
Does anyone know what the metric tensor looks like for a 2 dimensional sphere (surface of the sphere)?
I know...

Jun2511 03:48 PM
HallsofIvy

2 
1,546 
Has anyone written on differential geometry for complex spaces where rather than z = x + iy we use z = r e^it (Polar...

Dec312 11:49 PM
thehangedman

0 
645 
An ellipse is a conic section. If you construct an ellipse using a cone, does the axis of the cone cross through one...

Dec808 02:33 AM
tinytim

3 
3,258 
http://en.wikipedia.org/wiki/Squared_square
It is known that simple perfect squared squares exist, with the lowest...

Feb2112 03:53 PM
TheFerruccio

6 
1,429 
Hello guys,
I keep hearing that Euclidean parallel postulate was broken through differential geometry, can someone...

Aug3109 01:24 PM
Jim

20 
2,938 
I have a sphere with the equation
(x3)2+(y2)2+(z+5)2=36
two question:
1. how do I find the equation of the...

Jan2510 07:50 AM
rasmhop

1 
5,089 
I was talking to a friend recently about the nature of infinity and Georg Cantor's Continuum Hypothesis and I recanted...

May2610 11:59 AM
TheAlkemist

2 
887 
I was wondering if topology has ever been utilized on the structure of DNA and how that applies to its functions? I am...

Sep810 12:18 PM
thE3nigma

2 
801 
I need some help getting from point A to B. Let's say we have the plain ol' heat equation
u_t=\Delta u
where the...

Dec2205 04:48 PM
the.bone

3 
1,772 
OK, this is more of a spot for an elaboration on a question I just posted in another thread. Not quite duplicating...

Feb106 08:46 AM
bchui

5 
6,251 
Hi
I'm looking for a simple definition fo the affine connection because I can't understand it's meanning , that...

Apr908 01:55 PM
LorenzoMath

12 
6,671 
Hi , everyone
I have a problem with geodesic equation .
I know the method of solving it , but I can't understand the...

Apr1508 05:21 PM
the shadow

14 
6,836 
I find that group structure of nsphere is SO(n+1)/SO(n) (at http://en.wikipedia.org/wiki/N_sphere). So I want to find...

Mar2212 10:12 PM
homeomorphic

7 
1,377 
Prove the theorem (Appolonius) for the triangle ABC where A, B, C are the respective points (a,0), (a,0), (b,C) on...

Jun1807 05:41 PM
thagamizer

2 
1,841 
Hello members,
I am a bit stumped on a mathematical problem. If this is in the wrong section I apologize. ...

Oct810 06:51 AM
thadman

0 
861 
How many independant components does the RiemannTensor have in n dimensional space?

Apr807 06:04 PM
Chris Hillman

5 
5,087 
What is the metric or distance between two points in a hyperbolic space of dimension n?

Sep108 03:46 AM
tgt

0 
1,757 
There are models I've come across in physics involving things such as a 4 dimensional surface of a 5 dimensional...

Sep1310 07:35 PM
lavinia

21 
2,585 
For n\geq 2, is there a smooth map f: S^n\rightarrow E (E is the equator of S^n) which has the property that the...

Sep3009 07:52 PM
TFT

2 
1,590 
Using the Mayer–Vietoris sequence, how can we calculate the
De Rham cohomology of the Kelin bottle?

Oct1509 09:17 AM
TFT

8 
3,404 
I keep seeing this come up in relativity and tensor resources but I have no idea wht the heck it means. Could someone...

Feb1907 11:10 AM
whatta

5 
4,625 
could someone please explain to me what the tensor product is and why we invented it? most resources just state it...

Feb2307 05:58 AM
pmb_phy

3 
2,112 
Can any resources on gaussian geometry be found on line?

Feb1907 10:07 PM
DeadWolfe

2 
2,831 
How can we prove that the tensor product between two tensors of lower rank forms the basis for ANY tensor of higher...

Feb2407 12:02 AM
Terilien

37 
4,103 
what is a good book in differential geometry. I currently know calculus, a bit about differential equations, a bit of...

Feb2807 03:16 PM
AlphaNumeric

2 
1,670 
I've heard of something called a covariant derivative. what motivates it and what is it?

Mar1807 05:16 PM
Terilien

12 
6,146 
how do we derive the formula for the parallel tranport of a general tensor? I understand the ones for covarint and...

Mar1807 06:05 PM
Terilien

0 
1,395 
What orginally motivated the field of differential geometry?

Mar2707 12:41 PM
Hurkyl

25 
3,050 
i'm having a hard time computing these so could people show me several examples to help me get a better feel for them...

Mar2407 04:22 AM
cosmicstring1

7 
17,904 
I was wondering as to how to prove stokes theorem in its general and smexy form.Also what is the intuition behind...

Apr1507 01:13 PM
mathwonk

4 
2,397 
What exactly is the exterior derivative? What is its motivation? how do you compute it? Most importantly why is that...

May2410 03:28 PM
Amadeuz

18 
4,571 
i was curious as to what exactly this is and more importantly, what motivates it. what are its applications?

Jun1310 04:27 AM
Living_Dog

35 
15,564 
what are they exactly?

Apr2407 02:26 PM
mathwonk

1 
1,116 