Advanced Math

For the highest-level (post-calculus) math questions that don't fall into any other category.
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mathematical analysis: Given seq {x_n}, lim[n->infty] x_n = a, then...
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3
Views
975
Roberto37
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Steven G
Simple Number Theory: "Mr. White is an approximately forty years old father..."
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2
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1K
Steven G
Steven G
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Deriving equations of motion by using Lagrangian equations
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1
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898
Deleted member 4993
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Functional Analysis: Compactness of Ac:={f∈C1([0,1],ℝ):∫10|f(x)|2dx+∫10|f′(x)|2dx≤c}
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0
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863
SemperFi
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A
Help on the negation of statement "B union C is an independent set"
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2
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3K
Steven G
Steven G
Steven G
Number Theory: Each digit (0-9) appears once in 2^{29}, except... which?
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0
Views
770
Steven G
Steven G
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Differentiation of the null space: I would like to know the value of d(v)/dt.
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5
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1K
Raja88
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Identifying invalid expressions: Let F and U be vector field,scalar field, resp'ly.
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2
Views
1K
HallsofIvy
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Steven G
Solve system of eqns: xz-2yt=3, xt+yz=1; Find x2+y2+z2+t2 (x,y,z,t integers)
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1
Views
1K
daon2
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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
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2
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1K
Steven G
Steven G
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Which curve is this k(s)=s
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2
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791
daon2
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Reparameterization of ellipse c(t)=(2sint, cost), and parabola y=x^2/2
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4
Views
926
nisde
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A Challenge worth the time
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2
Views
911
ksdhart2
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T
The relationships between Prime number and Fibonacci number (Part 2)
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0
Views
654
thinhnghiem123
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A
discrete math: Given sigma and tau, find (sigma)^5 (tau)^{-1}
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5
Views
1K
HallsofIvy
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T
Pairing cells in odd squares. [Graph Theory / Combinatorics]
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1
Views
791
Tricky
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MECHANICS - DIFFICULT PULLEY PROBLEM - Please help
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4
Views
994
HallsofIvy
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I
Trying to prove: Subgraph of a planar graph is also a planar graph
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1
Views
974
Dr.Peterson
Dr.Peterson
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I know sum[k=1,n] k = [n(n+1)]/2, but what about Σ cos(k) =?
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0
Views
2K
kapax
K
C
The Set of 9^n Challenge: How many numbers in the set START with "9"?
Replies
6
Views
1K
StayRelentless
S
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