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Aug
31
comment Parallel vectors in $\mathbb{R}^n$.
Hint: If you are working in R^n then you have a set of basis vectors. Try to express both x and y in that basis and mull that over for a bit. It should shed some light on your problem.
Jul
29
comment Help on a tough summation from Rudin?
@JSwanson: Thank you as well. I appreciate the helpful nudge in the right direction.
Jul
29
comment Help on a tough summation from Rudin?
Oh man.. That was a righteous calculation. Yeah I'm with you. I can see they're the same. The shifting of the index on the sum threw me off. Thanks for the help!
Jul
19
comment Divisors of all values of polynomial over $\Bbb Z\,$ (fixed divisors)
Very nice example! I went and read up on turbo coding and eventually ended up at spectrum.ieee.org/computing/software/… -- super interesting. I've got your paper on my to-do list as well. :) Thanks for the help. BTW: I sent this on to a friend at work who had just asked me about how this (number theory) was useful. He was really impressed with this application.
Jul
19
comment Divisors of all values of polynomial over $\Bbb Z\,$ (fixed divisors)
This was very helpful. Thanks for the pointers and the perspective.