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

Feb2313 09:24 AM
micromass

1 
30,530 
Hi,
I'm Yr 13 and just wanted to do some further reading/exploring.
So i understand that the zeta function is...

Aug1912 01:34 AM
Kraflyn

19 
7,706 
Do all linear transformations are matrix transformation? In a book by David C Lay, he wrote on page 77 that not all...

Aug212 04:21 PM
HallsofIvy

5 
6,191 
Hi,
I need help with matrix derivation. I have 2 matrices of dimension 2x1, A and B.
A = ^{T}
B = ^{T}
I would...

Aug912 12:53 PM
micromass

5 
2,896 
X^4(X^3)y+(X^2)(y^2)x(y^3)+y^4= (x+y)^45xy(x+y)^2+5(xy)^2
...

Aug1312 07:51 PM
mahmudarif

5 
3,444 
Hi I am trying to learn about quotient groups to fill the gaps on things I didn't quite understand from undergrad....

Aug1412 10:16 PM
Bacle2

7 
1,395 
Def: A low discrepancy sequence is a uniformly distributed sequence with minimal discrepancy, O(logN/N).
Question:...

Aug212 03:26 PM
mehr1methanol

3 
1,299 
Okay so I'm a first year engineering student and I'm taking linear algebra.
I understand how to take determinants...

Aug812 11:03 PM
johnqwertyful

11 
1,712 
I originally asked this in the Calculus & Analysis forum. But perhaps this is better suited as a question in Abstract...

Aug512 12:12 AM
rbj

6 
1,771 
For an arbitrary distance the equation is:
\sqrt{\Sigma_{i}^{n}x_{i}^{2}}
I would like to know what are the...

Aug112 04:12 PM
lavinia

5 
1,022 
I am having trouble understanding the permutations of a finite set in general. I want to know what it may be used for,...

Aug312 01:59 PM
marschmellow

3 
1,047 
First,could you please clear this doubt
A polynomial with rational coefficients does not form a vector space over...

Aug212 09:47 PM
homeomorphic

4 
1,249 
Students familiar with Euclidean space find the introduction of general vectors spaces pretty boring and abstract...

Aug912 12:10 PM
Vaedoris

2 
1,212 
Hello All:
Suppose I have a completely known linear system: A*x=b. I know the matrix A, and an x and the associated...

Aug112 03:35 PM
Blue2Sky

4 
652 
Attached is a graph of the number of goldbach partitions versus Hardy Littlewoods asymptote for even numbers of the...

Aug112 09:44 PM
Paul Mackenzie

0 
1,194 
Consider the following sequence, where the elements are rational numbers mulriplied by \pi:
(\alpha_{i}) = \hspace{2...

Aug312 09:17 AM
mehr1methanol

2 
1,310 
Let us take the most mainstream irrational out there, (Pi).
Now write (Pi) as:
3.
14159265...
Let us number...

Aug512 07:34 AM
mfb

3 
1,682 
Hello, this is rather vague but I had a lecture around a year ago about prime numbers and how a mathematician (Hardy...

Aug712 11:44 PM
Bacle2

4 
2,315 
This is very weird, but I found an inconsistency in the application of Cramer's Rule for a 3x3 simple linear matrix. ...

Aug1012 10:03 AM
DonAntonio

3 
968 
Hi, I have to take a placement exam in linear algebra this fall so I have been studying some past exams. This is a...

Aug812 12:06 PM
Fractal20

4 
954 
I have been investigating goldbach partitions for some time.
One interesting observation I have been able to...

Aug912 05:27 AM
Paul Mackenzie

2 
1,460 
Is there a way to define in how many ways can I form a number by it's portions?
e.g: the number 5 has 6 ways:...

Aug812 05:17 PM
gerben

4 
1,374 
There's a geometric interpretation of the determinant of an operator in a real vector space that I've always found...

Aug912 03:09 PM
dEdt

6 
1,373 
Hi, I have this problem that is solved, but I don't understand the theory behind it.
It says: Which of the...

Aug812 07:32 PM
jbunniii

5 
1,002 
What is eigen value, eigen vector etc and what is their physical significance?
Devanand T

Aug1112 05:57 AM
voko

8 
1,870 
I was thinking about identities, and seem to have arrived at a contradiction. I'm sure I'm missing something.
A(n)...

Aug1112 12:50 PM
physicsforum7

8 
1,316 
I have been having trouble of late with partial fraction decomposition. Not so much the maths, but the intuition...

Aug1112 01:37 PM
Taylor_1989

2 
885 
Suppose we have a finite dimensional inner product space V over the field F. We can define a map from V to F...

Aug1112 08:13 PM
dEdt

3 
1,034 
Let a, b and c be positive integers such that a^(b+c) = b^c x c Prove that b is a divisor of c, and that c is of the...

Aug1212 05:10 AM
Idiotinabox

2 
1,349 
The isomorphism of ℝ5 and P4 is obvious for the "standard" inner product space.
The following question arise from...

Aug1812 09:58 PM
chiro

3 
968 
I was perusing the internet and I came across a formula for the area of triangle in a coordinate plane.
With...

Aug1312 11:36 AM
DonAntonio

1 
910 
if a, b, c (integers) are coprimes then (an + bn + cn ) / abc can't be a number that is not a fraction (integer)....

Aug1512 08:55 PM
haruspex

2 
1,579 
I have a small idea on what irreducible and primitive polynomials are in Abstract algebra. But what is minimal...

Aug1412 09:22 AM
HallsofIvy

2 
824 
Can any one clarify the concepts of zero vector and zero scalar?
Devanand T

Aug1812 10:13 AM
Fredrik

3 
2,023 
Hello fellas.
I have this formula that encodes data:
OUTPUT = (Data * 7) + (Data * 2) + 8
So in this case, if...

Aug1412 06:11 AM
chiro

3 
737 
If H is a Hermitian operator, then its eigenvalues are real. Is the converse true?

Aug1712 03:23 AM
NegativeDept

2 
1,089 
Can anyone tell me how can i find a solution to a transcendental equation?
Any link, where i will get methods to...

Aug1512 07:13 AM
HallsofIvy

2 
1,018 
Hello,
I have a doubt on the definition of Lie groups that I would like to clarify.
Let's have the set of...

Aug1512 05:09 AM
Bacle2

4 
879 
Let p be a prime. Let H_{i}, i=1,...,n be normal subgroups of a finite group G. I want to prove the following:
If...

Aug1612 10:10 PM
moont14263

3 
1,032 
My question is about the shaded area in the attachment?
How did the author get that all the elements of order p or 4...

Aug1812 12:04 PM
moont14263

2 
919 
If I know that \sum_{k=1}^n a_{ik} = 1 and \sum_{j=1}^n b_{kj} = 1, why is the following permitted?
\sum_{j=1}^n...

Aug1812 11:04 AM
IniquiTrance

2 
803 