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Please post any and all homework or other textbook-style problems in one of the Homework & Coursework Questions...
Feb23-13 09:25 AM
micromass
1 24,742
I am reading James Munkres' book, Elements of Algebraic Topology. Theorem 6.2 on page 35 concerns the homology...
T 03:06 AM
homeomorphic
1 98
I am reading James Munkres' book, Elements of Algebraic Topology. Theorem 6.5 on page 39 concerns the homology...
T 12:27 AM
Math Amateur
0 53
I am reading James Munkres' book, Elements of Algebraic Topology. Theorem 6.3 on page 37 concerns the homology...
Y 09:07 PM
WWGD
1 75
Hi all, I was reviewing some old material on the representation of orientable surfaces in terms of disks and bands , ...
Y 08:43 PM
WWGD
0 66
a function, say f, can be integrated m times (say m less than infinity) AND its first derivative is bounded and...
Y 08:37 PM
gopher_p
9 136
I'm reading through a book on Riemann surfaces, and I tend to get stuck on some of the proofs (maybe because of my...
Y 08:24 PM
mathwonk
3 72
If f be a measurable function. Assume that lim λm({x|f(x)>λ}) exists and is finite as λ tends to infinite Does...
Y 12:13 PM
Erland
8 218
Mathematically what does it mean to take a "2D slice of a 6D Calabi-Yau manifold"? Part of quote taken from the...
Apr21-14 11:37 AM
mathwonk
7 311
I'm slightly confused at the proof of this theorem, hopefully someone can help. Identity theorem: Suppose X and Y...
Apr21-14 08:56 AM
disregardthat
9 130
This picture http://i.stack.imgur.com/TQ9j8.png from Visual Complex Analysis is all you need to derive the...
Apr20-14 09:29 PM
homeomorphic
1 102
Hello! I'm trying to teach myself some mathematics, and I want to see if I understand this concept correctly from...
Apr20-14 01:54 PM
homeomorphic
6 330
I am reading James Munkres' book, Elements of Algebraic Topology. Theorem 6.2 on page 35 concerns the homology...
Apr19-14 03:31 AM
Math Amateur
4 161
I asked this in the logic&probability subforum, but I thought I'd try my luck here. ...... Let (A,\mathcal A),...
Apr16-14 09:00 AM
economicsnerd
0 107
Let T: l^2 -> l^2 be bounded linear operators. K=L(l^2,l^2) be the space of T, Prove that K=L(l^2,l^2) is not...
Apr13-14 05:05 PM
micromass
2 145
I am reading munkres topolgy and I am struggling with understanding the following sentence: "We say that a subset C...
Apr13-14 11:16 AM
micromass
4 225
https://www.youtube.com/watch?v=pXQPI2oA8Fw Around the 4 minute mark the lecturer makes this statement, but I am...
Apr9-14 07:47 PM
D H
9 540
If you take an ordered field of numbers with the operations of addition and multiplication, endowed with the...
Apr7-14 04:37 PM
Mark44
6 360
May i know to obtain fourier series representation for trigonometric and complex form base on magnitude spectrum and...
Apr5-14 03:01 PM
mathman
1 234
I've got a Green's function in which all the impulses are on the line from the north pole to the origin (polar angle...
Apr1-14 05:13 PM
SupernerdSven
0 281
The Cauchy's differintegral formula is: \frac{d^n}{dz^n}f(z_0)=\frac{n!}{2\pi...
Mar31-14 04:23 PM
Jhenrique
2 288
If a holomorphic function is a function that \frac{\partial f}{\partial \bar{z}} =0 Thus, an antiholomorphic function...
Mar30-14 03:05 PM
Jhenrique
2 187
In showing diam(cl(A)) ≤ diam(A), (cl(A)=closure of A) one method of proof* involves letting x,y be points in cl(A)...
Mar29-14 08:00 PM
micromass
3 267
I am reading Martin Crossley's book, Essential Topology. I am at present studying Example 5.55 regarding the Mobius...
Mar28-14 09:16 AM
Mandelbroth
1 249
If a space X is arcwise connected, then for any two points p and q in X the fundamental groups ##\pi_1(X,p)## and...
Mar27-14 10:22 PM
mathwonk
4 421
I am reading Martin Crossley's book, Essential Topology. Example 5.43 on page 74 reads as follows: ...
Mar21-14 04:12 PM
Mandelbroth
1 329
Example 1 in James Munkres' book, Topology (2nd Edition) reads as follows: ...
Mar21-14 12:00 AM
Math Amateur
3 309
Hello, given two functions f and g the operation of convolution f\ast g finds many applications in many different...
Mar20-14 03:29 PM
mnb96
4 306
what the following statement exactly mean :"A topological space is a set M with a distinguished collection of...
Mar19-14 08:53 AM
lee.spi
4 274
A fellow student of mine asked a question to our teacher in functional analysis, and the answer we got was not very...
Mar17-14 11:54 AM
economicsnerd
13 1,040
The context is that I am reading the proof that Lebesgue measure is rotation invariant Let X be a k-dimensional...
Mar15-14 06:43 AM
Shaji D R
12 524
Hi there, Let S denote the shift operator on the Hardy space on the unit disc H^2, that is (Sf)(z)=zf(z). My...
Mar14-14 10:28 AM
micromass
3 277
Hi everyone, a couple of technical questions : 1) Definition: Anyone know the definition of the induced orientation...
Mar14-14 04:41 AM
WWGD
1 244
I'm trying to get a better understanding of some topology for a GR class I'm taking...I'm wondering if someone can...
Mar14-14 04:04 AM
WWGD
9 375
Calculating residues are useful when we are trying to solve some improper integral, because the Cauchy principal value...
Mar9-14 04:35 PM
lurflurf
5 359
Let α be a Dedekind Cut. w a positive rational.How to prove that there exists a integer n such that nw is a member of...
Mar9-14 04:27 AM
Shaji D R
1 243
I was taking a break from studying from my real analysis, electrodynamics, and nuclear physics exams this week, and,...
Mar8-14 01:08 PM
epr1990
8 339
Hello all, I'm going through Foundations of Mathematical Analysis by Johnsonbaugh and Pfaffenberger, and I read a...
Mar7-14 06:18 PM
Stephen Tashi
1 328
Hello: I am trying to find a functional derivative of the following functional: v_{s}, v_{ext}(r)] = \int...
Mar4-14 09:42 AM
dikmikkel
0 305
It seems strange, but would a metric space consisting of two points, X={a,∞} be totally bounded, but not bounded?...
Mar4-14 07:12 AM
shortydeb
3 344
When considering tempered distributions, I am only aware of the definition of test functions of a real variable. ...
Mar1-14 07:27 AM
jasonRF
3 397

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