Advanced Math

For the highest-level (post-calculus) math questions that don't fall into any other category.
MaxMath
Is "Least upper bound axiom" an axiom or only a proved theorem?
Replies
15
Views
3K
NotJeffM
N
O
Prove that if [imath]A \subseteq B \subseteq \mathbb{R}[/imath] then [imath]\sup A \le \sup B[/imath]
2
Replies
20
Views
3K
MaxMath
MaxMath
MaxMath
Can someone please help me understand an argument in Hardy's A Course of Pure Mathematics
2
Replies
31
Views
6K
MaxMath
MaxMath
D
Solving for 3 variables (formula x=a + (b * (b - 1) / 2))
Replies
9
Views
2K
blamocur
blamocur
O
Correct negation of a statement (living in L.A. & winning the lottery)
Replies
4
Views
2K
MaxMath
MaxMath
O
[imath]\mathcal{P}(A) \cup \mathcal{P}(B) \subseteq \mathcal{P}(A\cup B)[/imath]
Replies
2
Views
1K
MaxMath
MaxMath
C
proof by cases: if (P and Q) or (P and R), then P and (Q or R)
Replies
15
Views
4K
MaxMath
MaxMath
M
  • Locked
2 Questions about Cantor's Diagonal Argument
2 3
Replies
54
Views
12K
Mates
M
I
Finding Average Power (in circuit)
Replies
1
Views
859
I Love Pi
I
C
number theory problem: Given integes a, b_1, b_2,..., b_k such that b_i|a and gcd(b_i,b_j)=1. Prove...
Replies
8
Views
2K
Dr.Peterson
Dr.Peterson
C
find the number of partitions of a set Into k blocks
Replies
4
Views
1K
pka
pka
C
Could anyone help me to show that an interval graph is the complementary graph of a comparability graph ?
Replies
1
Views
878
blamocur
blamocur
C
How I can find the exact value of this sum using binomial coefficient
Replies
3
Views
1K
pka
pka
D
Graph theory
Replies
3
Views
1K
Dr.Peterson
Dr.Peterson
R
Would this be a correct reason for why row reduction method gives linearly independent column vectors of a matrix that are basis of column space
Replies
3
Views
1K
blamocur
blamocur
J
Using transformation formula and normal vector to create transformation matrix
Replies
2
Views
881
blamocur
blamocur
O
Incidence Matrix
Replies
6
Views
2K
Dr.Peterson
Dr.Peterson
S
How can I improve my answer deducted 50%, even though it's correct?
Replies
2
Views
1K
Dr.Peterson
Dr.Peterson
J
Tribal zeros of zeta function: Can anybody explains why -2 is a trivial zero of zeta function?
Replies
1
Views
1K
Otis
Otis
M
  • Locked
Why can't we define sequential numbers on the real number line?
2 3
Replies
49
Views
9K
stapel
stapel
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