FactChecker's latest activity
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FactChecker reacted to fresh_42's post in the thread I Midpoint(s) of the unbounded number line with
Like.
I think this is a good example of how mathematics works. You have to define the terms you use precisely. If we assume "midpoint"... -
FactChecker replied to the thread I Midpoint(s) of the unbounded number line.Yes. Any finite number is as good as any other. That goes too far. It's impossible to say that any number is "exactly halfway between...
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FactChecker reacted to jbriggs444's post in the thread B Why Do Events Freeze For Me at the Speed of Light? with Like.
Yes, there is a last instant of your home world's future that you will ever see. However, this last instant is not seen when you reach...
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I don't think we should use the words wrong or false. The answer is simply not as simple as expected, since the crucial point is...
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FactChecker replied to the thread Complex Numbers (Laurent Series).Maybe I should have said, unnecessary or misleading or arbitrary. In any case, IMO, it is important to know and use the radius of...
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FactChecker replied to the thread Complex Numbers (Laurent Series).It is simpler to add the series expansions of ##\frac{z}{z^3(z^2-2)}## and ##\frac{1}{z^3(z^2-2)}##. Both series are simple to derive...
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FactChecker reacted to sbrothy's post in the thread If you think having a backup is too expensive, try not having one with Like.
Yeah. That sounds like real life.
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FactChecker reacted to sbrothy's post in the thread If you think having a backup is too expensive, try not having one with Like.
Well, I cycle between a couple variations on patterns. Something I learned working alongside a statistician as a developer. He was so...
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FactChecker replied to the thread Complex Numbers (Laurent Series).I haven't looked at your work, but if it is correct, then it will be valid for the modified problem with domains specified as ##|z|\lt...
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FactChecker replied to the thread If you think having a backup is too expensive, try not having one.PF? That's how I do it and still make them all different. ;-)
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FactChecker replied to the thread I Apparent counterexample to Cauchy-Goursat theorem (Complex Analysis).Good question. If you want to keep the domain, ##D##, simply connected, you can not include any point on the negative reals (the branch...
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FactChecker replied to the thread If you think having a backup is too expensive, try not having one.That is sort of what I do. I keep all mine in PasswordSafe. Most that I very rarely use can be any random thing and I can look them up...
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FactChecker reacted to sbrothy's post in the thread If you think having a backup is too expensive, try not having one with Like.
Mnemonics. "Mum very easily made a jam sandwich using no peanutbutter." = Merkur, Venus, Earth, Mars, The Asteroid Belt, Jupiter...
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Yes. Expanding ##(z - a)^{-k}## in binomial series can be done in two ways; one converges for ##|z| < |a|## and the other for ##|z| > |a|##.
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FactChecker replied to the thread Complex Numbers (Laurent Series).Series (2) can not converge at ##z=\sqrt 2## because the function is not defined there. The region of convergence (##1 \lt |z| \lt...