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Miscellaneous math
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Posted 2016-07-19, 04:00 PM


"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram
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Posted 2016-07-20, 12:56 PM in reply to Chruser's post "Miscellaneous math"
Surely, there is a simpler method to select between 1 and 0 depending on odd/even than your summation?
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Posted 2016-07-20, 06:02 PM in reply to WetWired's post starting "Surely, there is a simpler method to..."
The answer is 7
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-Spector- is the result of 14 billion years of hydrogen atom evolution-Spector- is the result of 14 billion years of hydrogen atom evolution-Spector- is the result of 14 billion years of hydrogen atom evolution-Spector- is the result of 14 billion years of hydrogen atom evolution-Spector- is the result of 14 billion years of hydrogen atom evolution-Spector- is the result of 14 billion years of hydrogen atom evolution
 
 
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Posted 2016-07-20, 08:49 PM in reply to Chruser's post "Miscellaneous math"
Wait! What an obtuse way to say that n choose k = n choose k or n choose n-k!

Why not just or even

Last edited by WetWired; 2016-07-20 at 08:58 PM.
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Posted 2016-07-25, 06:25 PM in reply to WetWired's post starting "Wait! What an obtuse way to say that n..."
WetWired said: [Goto]
Wait! What an obtuse way to say that n choose k = n choose k or n choose n-k!

Why not just or even
cuz u a bitch
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-Spector- is the result of 14 billion years of hydrogen atom evolution-Spector- is the result of 14 billion years of hydrogen atom evolution-Spector- is the result of 14 billion years of hydrogen atom evolution-Spector- is the result of 14 billion years of hydrogen atom evolution-Spector- is the result of 14 billion years of hydrogen atom evolution-Spector- is the result of 14 billion years of hydrogen atom evolution
 
 
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Posted 2016-07-31, 07:48 PM in reply to WetWired's post starting "Wait! What an obtuse way to say that n..."
WetWired said: [Goto]
Wait! What an obtuse way to say that n choose k = n choose k or n choose n-k!

Why not just or even

Yes, my "formula" is just the result of using the identity repeatedly, followed by a little algebra:



I just thought the symmetry between the sum and product (and their upper limits) was fun.
"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram
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Posted 2016-08-01, 06:25 PM in reply to Chruser's post starting "Yes, my "formula" is just the result of..."
Since I'm just sitting here shit posting, what's your favorite "fun fact about math"?


Mine is: X% of Y is equal to Y% of X
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Posted 2016-08-02, 12:00 PM in reply to -Spector-'s post starting "Since I'm just sitting here shit..."










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Posted 2016-08-03, 08:29 AM in reply to -Spector-'s post starting "Since I'm just sitting here shit..."
If you had a wire as long as the circumference of the Earth and added just ten meters to it it would float 1.6 meters off the ground everywhere.

If you could fold a piece of paper 42 times you would reach the moon and beyond.

If you have 23 people in a room there's a 50% chance that two of them share a birthday. If you have 50 people in a room there's a 97% chance that two of them share a birthday.

(1/2)+(1/4)+(1/8)+(1/16)+(1/32)+...=1

An infinite surface area can enclose a finite volume.

Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. He then says to you, "Do you want to pick door No. 2?" It is to your advantage to switch your choice.

10! seconds is exactly six weeks.

If you properly shuffle a deck of cards, chances are the order in that deck has never been seen before.

Given a solid ball in 3dimensional space, there exists a decomposition of the ball into a finite number of disjoint subsets, which can then be put back together in a different way to yield two identical copies of the original ball. This is known as the Banach-Tarski paradox.
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Posted 2016-08-03, 11:44 AM in reply to Demosthenes's post starting "If you had a wire as long as the..."
Demosthenes said: [Goto]
Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. He then says to you, "Do you want to pick door No. 2?" It is to your advantage to switch your choice.
False. This is only true if he has to show you a door with a goat behind it regardless of your original choice.
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