Advanced Math

For the highest-level (post-calculus) math questions that don't fall into any other category.
A
Question about an De Morgan Law
Replies
3
Views
1K
Dr.Peterson
Dr.Peterson
R
Multiply limits: Given lim[n->infy]x_n = 0, [x_n y_n] = 0, which stmt is correct?
Replies
5
Views
1K
Roberto37
R
B
Solve for x (multiplication of trigonometric function and logarithmic function)
Replies
6
Views
2K
brianz24
B
R
mathematical analysis: Given seq {x_n}, lim[n->infty] x_n = a, then...
Replies
3
Views
997
Roberto37
R
Steven G
Simple Number Theory: "Mr. White is an approximately forty years old father..."
Replies
2
Views
1K
Steven G
Steven G
S
Deriving equations of motion by using Lagrangian equations
Replies
1
Views
921
Deleted member 4993
D
S
Functional Analysis: Compactness of Ac:={f∈C1([0,1],ℝ):∫10|f(x)|2dx+∫10|f′(x)|2dx≤c}
Replies
0
Views
888
SemperFi
S
A
Help on the negation of statement "B union C is an independent set"
Replies
2
Views
3K
Steven G
Steven G
Steven G
Number Theory: Each digit (0-9) appears once in 2^{29}, except... which?
Replies
0
Views
796
Steven G
Steven G
R
Differentiation of the null space: I would like to know the value of d(v)/dt.
Replies
5
Views
1K
Raja88
R
W
Identifying invalid expressions: Let F and U be vector field,scalar field, resp'ly.
Replies
2
Views
1K
HallsofIvy
H
Steven G
Solve system of eqns: xz-2yt=3, xt+yz=1; Find x2+y2+z2+t2 (x,y,z,t integers)
Replies
1
Views
1K
daon2
D
Steven G
Basic Algebra? f:Z+ ---> Z*, s.t. f(n)=p/q, p + q = n, 0< p/q < 1 and gcd(p, q) =1
Replies
2
Views
1K
Steven G
Steven G
N
Which curve is this k(s)=s
Replies
2
Views
821
daon2
D
N
Reparameterization of ellipse c(t)=(2sint, cost), and parabola y=x^2/2
Replies
4
Views
967
nisde
N
P
A Challenge worth the time
Replies
2
Views
929
ksdhart2
K
T
The relationships between Prime number and Fibonacci number (Part 2)
Replies
0
Views
682
thinhnghiem123
T
A
discrete math: Given sigma and tau, find (sigma)^5 (tau)^{-1}
Replies
5
Views
1K
HallsofIvy
H
T
Pairing cells in odd squares. [Graph Theory / Combinatorics]
Replies
1
Views
812
Tricky
T
R
MECHANICS - DIFFICULT PULLEY PROBLEM - Please help
Replies
4
Views
1K
HallsofIvy
H
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