Advanced Math

For the highest-level (post-calculus) math questions that don't fall into any other category.
Steven G
Trouble with a Linear Diophantine Equation ($4.55 in quarters and dimes)
Replies
8
Views
1K
khansaheb
K
D
If multiplication is really iterative addition, why do we say rings have two binary operations?
Replies
0
Views
356
DumbQuestions
D
L
simpson 1/3 rule (prove approx. which comes out in the course of deriving Simpsons's 3/8 rule)
Replies
1
Views
670
blamocur
blamocur
M
What cut should be made in a Green Hackenbush game after solving its corresponding Nim game?
Replies
0
Views
666
Metronome
M
N
Transforming integral to spherical coordinates
Replies
4
Views
713
Nkj
N
S
Question: given: gcd(x,y) + gcd(x,z) + gcd(y,z) = y + z + 920 with x,y,z being positive integers prove that gcd(b,c)=920
Replies
4
Views
2K
Dr.Peterson
Dr.Peterson
I
Continuum Physics: Consider the Cauchy stress distribution for a continuum in equilibrium....
Replies
1
Views
532
ihsan
I
C
Sum is always positive (prove): ∑_(k=0 to 2n) (−λ)^k (Γ(2n+1−k+kα))/(Γ(kα+1)Γ(2n+1−k))
Replies
0
Views
354
CesarRocha
C
V
A formula for Pythagoreans with prime roots
2
Replies
22
Views
2K
Dr.Peterson
Dr.Peterson
S
Finding second-order finite difference stencil
Replies
3
Views
537
blamocur
blamocur
Qwertyuiop[]
Properties of matrix determinant: Find the det(u+2v-3w,w,2u) without calculating the vector u +2v-3w.
Replies
7
Views
734
khansaheb
K
Steven G
Is the proof in my book number theory correct? Why?
Replies
5
Views
752
Steven G
Steven G
C
Criticism needed for apparent proof of P=NP
Replies
0
Views
323
Copperside
C
M
I really don't understand this paper about the Greatest common divisor (GCD) and the Euclidean algorithm.
Replies
1
Views
449
Dr.Peterson
Dr.Peterson
T
Substantial Difficulties Encrypting Letter String ASCII values for RSA Assignment
Replies
4
Views
717
blamocur
blamocur
M
The Word Puzzle Problem (writing a program to solve word puzzles)
Replies
19
Views
3K
mario99
M
F
Charnes Cooper Transformation on Assortment Optimization
Replies
0
Views
391
Fischkare
F
1
Vertical reaction at supports.
Replies
10
Views
865
khansaheb
K
Steven G
Two "valid" proofs that sqrt(2) is irrational I think have flaws in it.
Replies
6
Views
887
pka
pka
1
DC Circuit: from diagram, find i_1 and i_2, voltage drop across R_2, total power dissipation
Replies
2
Views
418
topsquark
topsquark
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