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

Feb2313 09:24 AM
micromass

1 
30,447 
Hi
When we have f(n) \in o(g(n)) and g(n) \in O(H(n))
Can I proove that h(n)f(n) \in o(g(n))?
Obviously I...

Sep912 05:48 PM
ammoun

3 
1,571 
Consider the separation of the Riemann Zeta function in two terms
\begin{flalign*}
\zeta(s) &= 1^{s} + 2^{s} +...

Sep1912 04:01 PM
arivero

3 
2,043 
I am trying to find a sollution to this in the complex plane. One that seems to work is sqrt(i), but is this valid or...

Feb711 06:05 AM
hkBattousai

3 
837 
Hi, Everyone:
In linear algebra courses, the defs/formulas for
the sum, multiplication of matrices respectively,...

Feb1611 07:18 AM
sponsoredwalk

3 
1,114 
I have a 2x1 matrix A. I would like to find out E which is the mean of the matrix. How do I do this? what is the...

Feb1911 10:34 PM
tommyhakinen

3 
2,649 
My professor gave us this query at the end of class, it contained two parts.
1. Show a ring is idempotent
2. ...

Feb2311 07:08 AM
micromass

3 
1,479 
Given: N is a four digit number. S is the sum of N's digits.
Prove: N minus S is a multiple of 9.

Feb2411 08:32 AM
micromass

3 
926 
Find the padic volume of the padic circle x^2 + y^2 = 1.
This isn't hw.

Feb2711 03:59 PM
LordCalculus

3 
1,700 
Can someone give me a hint how to show the recurrence relations for G_k(z)
,in wiki it's for the d_n's?
Other than...

Mar511 10:58 PM
MathematicalPhysicist

3 
1,808 
a)Find a basis for the space of 2x2 symmetric matrices. Prove that your answer is indeed a basis.
b)Find the...

Mar311 08:35 AM
HallsofIvy

3 
5,767 
Would the field of the number theory collapse or flourish if the Riemann Hypothesis is proved as true???

Mar411 08:44 PM
Mensanator

3 
1,797 
Let R be a commutative ring. If an doesn't equal 0 and
a0+a1x+a2x^2+...+anx^n is a zero divisor in R, prove that an...

Mar1011 03:02 PM
micromass

3 
2,167 
Hi All,
suppose I have something like x^x^x^x where x is an integer. Is there any trick to figure the last digit of...

Mar1111 07:37 AM
disregardthat

3 
1,527 
Tell me if this is true:
We are given vector spaces V1, V2, ..., Vn of dimensions d1, d2, ..., dn respectively.
...

Mar1211 02:41 PM
mathwonk

3 
1,041 
I believe this is the correct place to post this as I believe I'm going to need to solve this as a linear system,...

Mar1311 06:10 PM
dsoltyka

3 
1,378 
So I'm reading a paper which assumes the following statement but I would like to be able to prove it.
Let S denote...

Mar1911 08:25 AM
ihavenoidea

3 
1,643 
I want to show that if 1 were a congruent number then there would be an integer solution to the equation x^4y^4=u^2...

Mar2011 09:03 AM
dodo

3 
1,212 
great article
http://plus.maths.org/content/musicprimes

Mar2811 06:46 AM
JeremyEbert

3 
1,227 
Let A and B be n x n matrices such that I+AB is invertible.
If B is invertible what can you deduce about the matrix...

Mar2311 07:35 AM
AlephZero

3 
1,266 
This should be a really easy question, but I can't easily find the answer in any of my books. Anyway, in an old test...

Mar2511 05:45 AM
HallsofIvy

3 
986 
Suppose G is a group and H is a subgroup of G. Then is G\H a subgroup itself? My feeling is it shouldn't be since...

Mar2911 04:05 AM
Deveno

3 
1,215 
Equation of a Surface relative to the standard basis is
X1^1 + 2X2^2 + 3x^3 4x1x2 4x2x3 =0
Now the question...

Apr111 10:16 AM
Stephen Tashi

3 
1,053 
so i have the function z=(2+i)/(i(3+4i)) and i need to linearize it to find the Im(z) and Re(z)
I get down to z=...

Apr511 05:25 PM
I like Serena

3 
1,120 
There is a paper written by R.T. Seeley in the Proceedings of Symposia Pure Mathematics that I've seen cited by...

Sep412 10:17 AM
mmmmmike

3 
2,468 
There is a strange compound nature to this that I can *almost* calculate. This is just something nagging at me.
...

Aug2612 03:39 PM
SteveL27

3 
1,054 
Hi,
A quick question:
Does a set need to be a subset to be a subspace of some vector space?

Sep2412 09:22 AM
Max.Planck

3 
675 
I do not have access to the math calculators.
Δ = 162*(ab)*(a^2b^2)*(a^3b^3) 108*(a^3b^3)*(ab)^3 +...

Sep2812 10:12 PM
epsi00

3 
1,401 
I was doing a brain treaser where the letters AH had to be put into an array 2 by 4 such that no letter is adjacent...

Oct412 07:08 AM
ramsey2879

3 
1,734 
http://timesofindia.indiatimes.com/city/guwahati/Mathematiciansolves270yearoldconjecture/articleshow/16635760.cms...

Oct112 09:45 PM
Greg Bernhardt

3 
2,829 
In this theorem it states " Let A be a m x n matrix. That is For each vector b in R^m, the column Ax=b has a...

Oct712 08:47 PM
HallsofIvy

3 
661 
If we have a linear transformation T:W > W. Then if we write T with respect to a different basis B, will the domain...

Oct1312 05:02 AM
Artusartos

3 
838 
I am just in to reviewing abstract algebra and came across a theorem I'd forgotten:
...

Oct1012 09:08 AM
dumbQuestion

3 
760 
So the title says everything. Let's assume R is a set equipped with vector addition the same way we add real numbers...

Oct1112 06:43 PM
Robert1986

3 
984 
Linear functions are functions which satisfy the two properties:
f(x+y)=f(x)+f(y) \\
f(a*x)=a*f(x)
I was...

Oct1112 06:56 AM
chiro

3 
811 
How do you find the intersection of two planes in R3? The direction vector would be the cross product between the two...

Oct1112 07:14 PM
Studiot

3 
747 
Our math Teacher asked us to find how many equivalence relations are there in a set of 4 elements, the set given is...

Oct1312 11:46 AM
lwpirelliwl

3 
1,265 
I'm having some trouble internalizing the concept of span.
The question:
If u = ; v = ; and w = , describe...

Oct1412 09:29 AM
homeomorphic

3 
839 
I was just looking at wikipedia's article on ring homomorphisms (http://en.wikipedia.org/wiki/Ring_homomorphism) and I...

Oct1512 08:05 PM
AcidRainLiTE

3 
960 
Consider a plane P in ℝ^{3}. Is it necessarily the case that any vector outside this plane cannot be expressed as a...

Oct1712 09:27 PM
Stephen Tashi

3 
743 
Can someone please explain to me these two concepts and how they differ from each other? I'm taking a class entitled...

Oct1812 11:41 PM
mathwonk

3 
997 