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

Feb2313 09:24 AM
micromass

1 
30,515 
Hi
I have a problem I just can't seem to solve, even though the solution shouldn't be too hard
Let G be a finite...

Oct1809 04:15 PM
mathmadx

3 
907 
I have developed a prime counting function with no error; it returns the exact number of primes equal to or less than...

Oct1809 10:43 AM
talanum1

15 
6,017 
Hi,
on my site http://ilario.mazzei.googlepages.com/home i've published a pdf containing the prime numbers...

Oct1809 07:20 AM
ilario980

1 
1,390 
Hello, I'm studying linear algebra and wanted to know what is the difference between a "vector space" and a "vector...

Oct1809 07:08 AM
kman12

7 
983 
Why is the characteristic of a finite field a prime number???!

Oct1809 03:58 AM
v.dinesh

8 
11,174 
Is there a way to prove generally that the Dihedral group and its corresponding Symmetric group of the same order are...

Oct1709 09:37 AM
CompuChip

1 
1,407 
Can anyone give me an example of commutative but not associative two argument operation which has right and left...

Oct1709 08:32 AM
paweld

0 
762 
The linear algebra course I'm taking just became very "wordy" and I am having a hard time dealing notions such as...

Oct1709 06:28 AM
Fredrik

4 
2,485 
I'm just wondering if there is some sort of relationship between right coset and orbit of x. We just got to cosets,...

Oct1709 04:48 AM
Fredrik

3 
1,746 
Hey guys,
I was wondering how you would go about proving that the image of a transformation T, im(T), is invariant?...

Oct1709 12:12 AM
Office_Shredder

8 
1,283 
Hi everyone :)
at http://mathworld.wolfram.com/CarmichaelNumber.html it says that a Carmichael number is one which...

Oct1509 06:24 PM
robert Ihnot

5 
1,725 
I saw in an application of Sylow's theorems, it said we have something like a group of order 28 = 2^2 x 7, so we have...

Oct1509 04:46 PM
jbunniii

1 
851 
How much can a determinant tell you about the entries of a matrix? How much more if you know the size of the...

Oct1509 03:37 PM
jasonRF

3 
993 
Prove that if A is an invertible matrix and AB = BC then B = C. I thought the way to approach it was to use A^1 on...

Oct1509 06:56 AM
HallsofIvy

1 
6,860 
The complexified Lie algebra of the Lorentz group can be written as a direct sum of two commuting complexified Lie...

Oct1409 10:57 PM
aziz113

1 
977 
to begin I am wondering if its even true that they are equal. As i lost the sheet with that on it. If that is not true...

Oct1409 09:00 PM
lstellyl

1 
3,207 
Greetings PF,
I would like to sketch the proof that Abel gave for the insolubility of the quintic. This is a...

Oct1409 07:23 PM
icantadd

2 
1,753 
Does anyone know where I can access past exam papers in the field of linear algebra. I am particularly looking for...

Oct1409 08:49 AM
Dafe

4 
10,054 
I am in a linear algebra and differential equations course and have recently been learning how to find a basis for a...

Oct1409 06:52 AM
HallsofIvy

4 
2,982 
Hi all! I was working on some homework for the linear algebra section of my "Math Methods for Physicists" class and...

Oct1409 03:00 AM
Matthollyw00d

2 
9,746 
I'm having trouble understanding just what is the difference between the three types of maps: injective, surjective,...

Oct1309 03:56 PM
Moo Of Doom

4 
4,464 
Looking for info on game theory

Oct1209 01:49 AM
robert Ihnot

3 
1,597 
Hey guys, new to the forum but hoping you can help.
How do you prove that vector spaces V and U have a linear...

Oct1109 10:43 PM
Servarus

6 
3,247 
I'm working on trying to figure this proof out but its proving to be quite difficult does anyone have any insight?
...

Oct1109 02:30 PM
Office_Shredder

1 
4,232 
I was wondering if anyone could give me some hints on this
Suppose A^k=0 for some integer k is greater than or...

Oct1109 07:27 AM
HallsofIvy

2 
795 
Greetings,
I am faced with a problem in Group Theory. It's not homework. I am trying to study it by myself. The...

Oct1009 05:25 PM
Jösus

2 
2,053 
Let α (alpha) all in S_n be a cycle of length l. Prove that if α = τ_1 · · · τ_s, where τ_i are transpositions, then s...

Oct1009 04:40 PM
Jösus

1 
894 
Hello,
I am quite new here, as my number of posts might indicate. Thus I am not really sure whether or not this...

Oct1009 04:00 PM
Jösus

2 
1,266 
Hello,
how would you solve an homogeneous system of the form A\mathbf{x}=0, with the constrain...

Oct1009 09:27 AM
Hurkyl

5 
621 
Hello,
I'm trying to use either MAXIMA or MATLAB for extended polynomial division.
In MAXIMA, I can use the...

Oct809 11:46 PM
EBMath

0 
2,355 
Let V be a vector space and let T: V \rightarrow V be a linear transformation. Suppose that n and k are positive...

Oct809 02:38 PM
tinytim

1 
1,173 
Hi,
I have a (markov chain) transition matrix X which I understand. In particular each row of this matrix sums to...

Oct809 08:10 AM
g_edgar

5 
4,515 
1. The problem statement, all variables and given/known data
How do I show that the cp is p(x)=x^n, dimA=n?
2....

Oct809 07:10 AM
trambolin

7 
4,918 
I have a system that ideally creates a real symmetric negative definite matrix. However, due to the implementation of...

Oct809 03:33 AM
trambolin

3 
1,509 
Hello,
given a vector x=(a,b) in 2D, and considering another vector obtained by shifting cyclically the coordinates...

Oct709 01:38 PM
mnb96

12 
1,355 
Give one primitive element for each of the finite field:
F2n (here "2" is the subscript)
for n=1, n=2,...,n=8

Oct709 07:23 AM
tinytim

1 
659 
I need to calculate eigen values and eigen vectors of a large symmetric real matrix, but all eigen vectors have to be...

Oct709 07:13 AM
Born2bwire

3 
2,323 
Hello,
I was trying to follow a proof that uses the dot
product of two rank 2 tensors, as in A dot B.
How is...

Oct609 12:42 PM
dakg

5 
15,275 
I know that if n is odd and has k distinct prime factors, then the number of roots, x^2 = 1 (mod n), is equal to 2^k....

Oct609 08:04 AM
CRGreathouse

1 
1,908 
I'm considering the problem: Given c \in \bold{F}, v \in V where F is a field and V a vector space, show that cv = 0,...

Oct609 06:47 AM
Landau

7 
1,701 