Advanced Math

For the highest-level (post-calculus) math questions that don't fall into any other category.
L
definition and continuenty of an inverse function using delta and epsilon
Replies
3
Views
772
pka
pka
P
A simple number theory problem that drives me insane
Replies
7
Views
2K
PapaKurke
P
D
I need examples of series that can be examined by this convergence tests: Gauss, Raabe, schlomilch, bertrand. With answers
Replies
2
Views
944
Deleted member 4993
D
P
Linear algebra: For which values of 'a' are P = (-1, 1, 2), Q = (0, a, 1), R = (a, 4, -1) and S = (-11, -1, 0) corners of a tetrahedron?
Replies
7
Views
1K
Dr.Peterson
Dr.Peterson
H
Linear Algebra Rank of a Matrix Problem: Prove that a(k) array is monotonically increasing
Replies
2
Views
820
Heeyeyey
H
R
Concurrency on time: If I have a machine which it can execute multiple jobs on concurrent time....
Replies
0
Views
655
Ryan$
R
Steven G
Proof that QXQ is countable infinite
Replies
2
Views
6K
lookagain
L
A
Continuity/Discrete, Point vs Unit, Infinity question
Replies
9
Views
2K
HallsofIvy
H
K
Linear Algebra - Domain or co-domain for matrix A=[1,2;2,1;1,1] ?
Replies
2
Views
3K
KindofSlow
K
Steven G
Proof verification: Let U be some universal set. Define relation on P(U) by A ~ B iff A and B have same cardinality....
Replies
8
Views
2K
pka
pka
J
A spinning point: If a mathematical point has no dimensions, can it still spin?
Replies
4
Views
964
JeffM
J
J
Analysis of column load question for a concrete floor
Replies
0
Views
1K
JimCrown
J
E
weird series: Z_3 = 1/2, Z_n= Z_{n+1}/[cos(pi/n)]. It's a bizarre suite decreasing to 0 without ever going.
Replies
1
Views
942
HallsofIvy
H
C
Let X, Y, Z be sets, X not empty, X-cross-Y = X-cross-Z. Prove Y = Z. Clearly show use of "X not empty"
Replies
5
Views
2K
HallsofIvy
H
C
Position of the Moon Equation
Replies
4
Views
1K
Christian.
C
T
Micro bang theory (Point charge temporal transition to lower energy state points)
Replies
19
Views
2K
TheBox
T
T
Real and Imaginary Numbers
Replies
0
Views
744
Tan Tom
T
shahar
logic hidden assumption
Replies
9
Views
2K
shahar
shahar
A
Discrete math :)
Replies
1
Views
972
Steven G
Steven G
H
Graph help
Replies
4
Views
2K
Otis
Otis
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