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Sep
9
revised When are two 3D Lines parallel in Plücker matrix form?
found a mistake.
Sep
7
asked When are two 3D Lines parallel in Plücker matrix form?
Jul
2
awarded  Curious
Oct
23
awarded  Teacher
Oct
23
comment Probabilistic Robotics Exercise
Exactly! (Although, you would also need to prove that $\nu$ is the right constant as you would get if it were a Gaussian with your mean and variance as you wrote it.)
Oct
23
comment Probabilistic Robotics Exercise
Take all the $e^{...} e^{...}$ and look only at the exponent, to get something like $-\dfrac{1}{2}((x-1000)^2 + (x -z)^2)$. Multiply this out, and then bring it in the form of $(x-\mu_{new})^2 / \sigma_{new}$.
Oct
23
comment Probabilistic Robotics Exercise
No, that is correct. $p(z)$ is a constant in respect to $x$.
Oct
22
answered Probabilistic Robotics Exercise
Oct
20
revised $\gcd(c^a + 1, c^b + 1)$ for even $a$ and $b$?
added 121 characters in body
Oct
20
revised GCD of Fibonacci-like recurrence relation
link to new question
Oct
20
revised $\gcd(c^a + 1, c^b + 1)$ for even $a$ and $b$?
fixed error pointed out by Hagen
Oct
20
awarded  Benefactor
Oct
20
asked $\gcd(c^a + 1, c^b + 1)$ for even $a$ and $b$?
Oct
19
revised GCD of Fibonacci-like recurrence relation
comment about new findings
Oct
19
accepted GCD of Fibonacci-like recurrence relation
Oct
19
comment GCD of Fibonacci-like recurrence relation
No, I concentrated on the odd numbers using a sieve. Didn't get anywhere substantial (too tired). Also, I didn't know the prerequisites for 245, so didn't quite understand it. Anyway, for me a solution is more important than a proof. Thanks for all this!
Oct
18
comment GCD of Fibonacci-like recurrence relation
How would I prove it for a minus sign? (A link or hint would be enough)
Oct
18
comment GCD of Fibonacci-like recurrence relation
Any hints, or references to calculating $gcd(c^n+1, c^m+1)$? Maybe a sieve?
Oct
17
awarded  Promoter
Oct
16
answered Fourier Series: Shifting in time domain