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Existence Values. Useful? Practical? At least interesting?

Posted 10 years ago
POSTED BY: Matthew Knipfer
7 Replies
POSTED BY: Daniel Lichtblau

I wish I knew what that meant, haha :) I'm sorry my young mind is so naive and untrained.

POSTED BY: Matthew Knipfer

The 1/2 makes the Heaviside step identical to the sum of its Fourier series, a handy property when you use it in analysis.

POSTED BY: John Doty

I went ahead and checked the Heaviside out, and was struck at first by how much it matched my existence values. The only difference in how they're graphed is that my values don't have the 1/2 as the output at p, but that could easily be changed by removing the part about when x equals p = 1/2 so they're identical, so I see what you're getting at. I guess the logic behind what I'm doing with these, the whole greater than/less than bits that allow parts of functions to exist or be destroyed, has been done before (bummer), but what the heaviside doesn't do is the exact reason why I created these values - the heaviside defines boundaries off to the side rather than having it explicitly in the function. Maybe that's just me being picky, but without this idea, I'd just use regular ol' piecewises. I really appreciate the help, though. At least now I know some of this road has already been paved.

POSTED BY: Matthew Knipfer

I certainly won't deny that having human logic in there keeps things simpler; I've made some behemoths of functions from using these values, and they used to be rather small. Like you said, it's all about trade-offs. I'm still finding that niche where these are at least slightly more favourable to use over logic or defining boundaries off to the sides. I should probably take some computer science classes once I go to college to see if I can find that niche.

Thanks for your interest and for catching the joke :)

POSTED BY: Matthew Knipfer

You might want to look up the Heaviside step function.

POSTED BY: John Doty
POSTED BY: l van Veen
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