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seen Mar 1 '12 at 16:35

Feb
25
comment The square root of a variable is negative?
@RahulNarain The equality $1 = -1 * -1$ implies we are talking about real numbers. I don't make any kind of hasty generalization about the domain of $x$, or of $-1$ simply because none is possible. Trying to answer the question : what is the value of $x$ if $\sqrt{x} = -1$, that's the only answer possible. And quit trying to convert to reals all the time, it's not helping.
Feb
24
comment The square root of a variable is negative?
@RahulNarain $x$ is equal to 1, but also equal to $-1 * -1$ and explicitly so. Taking the square root of something that is by defined as $-1 * -1 $ means the result will be $-1$
Feb
24
revised The square root of a variable is negative?
Added details because I was fumbling with it.
Feb
24
revised The square root of a variable is negative?
Bad mistake fixed
Feb
24
answered The square root of a variable is negative?
Feb
23
awarded  Revival
Feb
23
comment Small primes attract large primes
@MichaelHardy Thank you for your comments, I tried to fix it as best as I could. You should see why I was talking about $ \sqrt{N}$ at the same time as the Sieve, now.
Feb
23
revised Small primes attract large primes
Removed false information and added Fourier Transform link
Feb
23
awarded  Teacher
Feb
2
awarded  Editor
Feb
2
revised Small primes attract large primes
Spelling
Feb
2
comment Small primes attract large primes
I'd like to point you towards Factorial Primes as well since it is an other way people look for primes and test their surroundings. I believe those type of numbers fit the criterion of appropriate surroundings, but keeping the Sieve in mind, I can assume no generalization is possible.
Feb
2
answered Small primes attract large primes
Feb
2
awarded  Student
Feb
2
awarded  Scholar
Feb
2
accepted Produce piecewise monotonic function with 3 points and their slope with MATLAB
Jan
31
comment Produce piecewise monotonic function with 3 points and their slope with MATLAB
I found this link by looking for Fritsch-Carlson. It appears pchip is very close to doing what I want it to do. Maybe I could wrap pchip in a function to use it. Do you think I'm better off reimplementing it?
Jan
31
asked Produce piecewise monotonic function with 3 points and their slope with MATLAB