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

Feb2313 09:24 AM
micromass

1 
35,182 
I understand that there is a way to find a basis \{e_1,...,e_n\} of a vector space V such that a 2vector A can be...

Oct2809 07:31 PM
jojo12345

1 
1,036 
well this is the question... if a,m and n are positive integers with m<n, then (a^(2^m)+1) is a divisor of...

Oct2809 12:22 AM
Petek

1 
1,309 
How do we go about finding the number of elements of a cyclic subgroup that's generated by an element in the main...

Oct2709 07:00 PM
hitmeoff

3 
5,210 
I'm just learning about vectors, just finished matrices for first year linear algebra. Anyways, I wanna be able to...

Oct2709 04:17 PM
iamsmooth

0 
1,508 
I am reading "history of vector analysis":
...

Oct2709 07:40 AM
Peeter

6 
1,881 
I have been given that V is a finite dimensional vector space over a field F and that W is a subspace of V. I need to...

Oct2609 07:35 PM
Dosmascerveza

2 
1,008 
I’ve got a confusion. We know a 1x3 row matrix is a 3vector i.e.
x=
Matrix x can be written in vector notation...

Oct2609 06:40 PM
tinytim

3 
1,625 
Can anyone help me transform the following G to Chomsky Normal Form?
S > abAB
A > bAB  λ
B > BAa  A ...

Oct2509 05:43 PM
rasmhop

1 
3,742 
Dear all,
The question Ive been struggling with is supposed to be solved using the way Lagrange's thm was proven(...

Oct2509 05:03 PM
rasmhop

3 
1,209 
Hi! I'm a bit confuse about spanning set.
could anyone give me an example of how to prove that a matrix with 1...

Oct2509 08:26 AM
bassmish

8 
13,355 
Can you help me with this problem:
if a^2 divides b^2, show that a divides b.
This was a homework question that I...

Oct2409 05:42 AM
Bingk

23 
9,880 
HI,
I came across the following question, which I could only solve for one trivial special case. I'm hoping for...

Oct2409 01:08 AM
fantispug

1 
5,791 
Is there an identity for a product of 2 LC Tensors in 4D if one sums over 3 of the indicies?
i.e.
\epsilon^{\mu...

Oct2409 12:38 AM
fantispug

1 
5,415 
I was trying to prove the statement "If (2^n)1 is prime then n is prime". I've already seen the proof using...

Oct2309 11:56 PM
fantispug

1 
1,051 
hi, and thanks for reading. hh, and this isn't homework, its just something i've been wondering about.
i've been...

Oct2209 02:00 PM
Zorba

9 
1,243 
I want to answer this question:
Find all the ideals of the direct product of rings R \times S.
(I think this means...

Oct2209 01:14 PM
siyacar

2 
5,205 
Let G be a finite group. For all elements of G (the following holds: g^2=e(the idendity.) So , all except the idendity...

Oct2109 11:24 AM
mathmadx

5 
1,146 
Suppose G is a group, a,b are two elements of G, does o(ab)=lcm(o(a),o(b))?
o(ab) denotes the order of ab,...

Oct2109 09:01 AM
CompuChip

1 
861 
Hello,
i am just got into the research of the abstract algebra and got stuck in the basic concepts of Fuzzy...

Oct2109 04:16 AM
adnan jahan

0 
1,282 
Hello,
In a book I'm reading about linear algebra it's mentioned that in order for the homogeneous system
Ax = 0...

Oct2109 02:29 AM
cupu

2 
1,041 
Hello all,
I am facing with the following problem:
I have a large PSD matrix (5000 x 5000), say A_0. I also...

Oct2009 11:24 PM
inversegamma

0 
934 
In computer science the XOR operation is a very important one, and I've heard XOR referred to as a "linear" function....

Oct2009 05:59 PM
BCon

5 
4,467 
Let A, B and C be 3x3 invertible matrices where det(A)=−4 ,det(B)=−2 and det(C) is some nonzero scalar. Find:
det...

Oct2009 02:02 PM
Office_Shredder

8 
1,171 
I'm trying to look how the formula made on this site. I want to know how this formula was derived. I tried to look on...

Oct2009 12:33 PM
mathmadx

7 
4,083 
I'm working on a project where the following has to be solved on a regular basis, as new column vectors are added to...

Oct2009 09:41 AM
feenaboccles

5 
1,117 
Hi, I have a question:
I am trying to find an isometry such that T(aU+bV)≠aT(U)+bT(V).
I have tried so many...

Oct2009 08:59 AM
g_edgar

2 
949 
this is apparently "really simple", but I just don't know how to do it from the examples I have and I feel like a...

Oct2009 07:18 AM
HallsofIvy

2 
841 
So I know this is the orbitstabilizer theorem. I saw it in Hungerford's Algebra (but without that name).
So we...

Oct2009 07:08 AM
Fredrik

7 
1,744 
I have my first midterm in 1st year linear algebra coming up, and I've done all the homework problems with regards to...

Oct1909 06:15 PM
nietzsche

2 
616 
I would be grateful for some help/tips/with this question.
Let (V,<,>) be a complex inner product space with an...

Oct1909 11:14 AM
GoodMax

1 
3,171 
I am reading (theorem 2.14) from a textbook, and don't understand how g = Tf and (#1) line of reasoning. The theorem...

Oct1909 11:08 AM
viviane363

9 
7,285 
Let A be an n x n matrix. Show that det(A) is the product of all the roots of the characteristic polynomial of A.

Oct1909 06:41 AM
HallsofIvy

2 
935 
Suppose the answer to a question involving vectors is the following:
v = 42.7ms1 at 339.4 degrees counterclockwise...

Oct1909 01:58 AM
lstellyl

1 
664 
Why is the cross product defined this way
(blah)i + (blah)j + (blah)k = u
and used this way
(blah)i  (blah)j...

Oct1809 04:41 PM
Noxide

3 
762 
Hi there, I have some questions to ask about the topic eigenvalues and one on diagonal matrices
1 can a square...

Oct1809 04:32 PM
HallsofIvy

8 
2,929 
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 
954 
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 
6,248 
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 
1,457 
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 
1,025 
Why is the characteristic of a finite field a prime number???!

Oct1809 03:58 AM
v.dinesh

8 
11,601 