Advanced Math

For the highest-level (post-calculus) math questions that don't fall into any other category.
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mod function and maps
Replies
10
Views
4K
marcmtlca
M
I
Mobius Function: prove function is multiplicative
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2
Views
3K
ifoan
I
C
division by lambda: x^3 +y^3 = z^3 where x,y,z are quadratic
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0
Views
1K
chrisl
C
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Discrete Math: compute phi(13), phi(14), etc
Replies
4
Views
3K
ifoan
I
D
Wonderful sequences problem.
Replies
4
Views
2K
marcmtlca
M
U
Optimal Control with Salvage Term
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1
Views
2K
JakeD
J
D
Let a > 0, a1 > 0. Define a(n+1) = 1/2(an+a/an) then,
Replies
8
Views
3K
daon
D
D
Another Su/pInf problem
Replies
2
Views
3K
daon
D
S
Check my proofs (Last call)
Replies
0
Views
1K
shivers20
S
S
Give a direct proof. If 3|m, then 3|m^2.
Replies
2
Views
3K
JakeD
J
S
Prove that if xy and x+y are even, then both x & y are e
Replies
3
Views
13K
pka
pka
S
Let x, y be an integer. Prove that (x+1)y^2 is even iff x...
Replies
4
Views
5K
pka
pka
M
What is the math that is used in programming languages?
Replies
5
Views
2K
galactus
G
S
Prove that if x+y is odd, then x and y are of same parity.
Replies
4
Views
13K
soroban
S
S
HELP: Please look at my result at check
Replies
0
Views
1K
SophieToft
S
E
Urgent: Please verify my result
Replies
2
Views
2K
Euroman24
E
L
arguments: the magnitude of e^(2 - 3i)
Replies
1
Views
2K
pka
pka
L
Evaluation of Sc z e^(z^2) dz on the complex plane
Replies
4
Views
2K
lastlydreaming
L
L
Converting to a Riemann Integral
Replies
1
Views
1K
pka
pka
T
Calculating Atmospheric pressure in relation to the blood pr
Replies
0
Views
1K
thelazyman
T
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