Advanced Math

For the highest-level (post-calculus) math questions that don't fall into any other category.
V
Determinant containing entries of the form cos(a_1 - b_1): Prove that its value is zero.
2
Replies
32
Views
3K
blamocur
blamocur
Steven G
a^n | b^n => a|b: I'm having trouble finishing up the proof
Replies
15
Views
2K
Steven G
Steven G
S
Prove that LCM(x, y) is primitive recursive (lcm(x, y) =“the least common multiplier of x and y”)
Replies
1
Views
498
Dr.Peterson
Dr.Peterson
Steven G
Nice number theory problem: Given that 14! = 87a78bc1200, find a, b, and c
Replies
15
Views
1K
BigBeachBanana
BigBeachBanana
T
Need some clarifications: "Show that the ideal (2(1 + i)) of Z(i) has for Z-basis 4,2(1 + i)"
Replies
1
Views
458
blamocur
blamocur
A
Tangent cone: X02f1(X1,X2,X3)+X0f2(X1,X2,X3)+f3(X1,X2,X3)=0
Replies
2
Views
550
blamocur
blamocur
M
Which of These Sentences are Propositions?
Replies
6
Views
1K
mario99
M
M
A Dog Named Bernie (carries 3 8-mm tapes, each containing 7 gigs; dog runs at 18 kph)
Replies
2
Views
888
mario99
M
J
Division Algorithm: What is the set "S", and where does "a - bk" come from?
Replies
8
Views
798
Steven G
Steven G
Steven G
Number Theory: Show that (nC0) -(1/2)(nC1)+(1/3)(nC2)-....+((-1)n/n)(nCn) = 1/(n+1)
Replies
11
Views
1K
khansaheb
K
I
Summing a series
Replies
1
Views
564
stapel
stapel
C
  • Locked
the law of (v or ~v)
2
Replies
24
Views
2K
stapel
stapel
M
Coefficient changes with log transformation; how to interpret the original coefficients?
Replies
9
Views
896
BigBeachBanana
BigBeachBanana
M
  • Locked
Trying to understand infinity (we are giving infinity a definite beginning point at 1/2 and a definite end point at 1)
2 3
Replies
40
Views
4K
stapel
stapel
M
The infinite sum of 1/(2^n) and various proofs that this equals 1
2
Replies
37
Views
4K
Steven G
Steven G
shahar
Question from GSFC: What is the meaning of the question: 23. The graph of y = x and x = 2 is...?
Replies
5
Views
959
Dr.Peterson
Dr.Peterson
E
Linear programming to Simplex: A cable company offers three types of products...
Replies
16
Views
1K
Emmet
E
K
distrubution of prime Numbers subsequently and infinite way using a graphic method and zeroes of zeta function need to be verify with mathlab
Replies
3
Views
730
khansaheb
K
J
Is Diagram 2 a tree of the undirected graph in Diagram 1 ?
Replies
6
Views
1K
JHY
J
W
Calculation of the double integral, over D, of (1+sin(xy)+y)/(1+x^2+y^2) dxdy
Replies
1
Views
420
Gatineau
G
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