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Topic: Has anyone seen this before? (Read 6896 times) 

Benny
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Has anyone seen this before?
« on: May 7^{th}, 2009, 5:30pm » 
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I came across quite accidentally this forum where it discusses http://eqworld.ipmnet.ru/forum/viewtopic.php?f=3&t=128 I'm not familiar with "structural geometry" Then, on the same site, I found at http://eqworld.ipmnet.ru/forum/viewtopic.php?f=3&t=143 y = x^{2} + 16 y' at x=3 the author finds y'= 10 ... it's quite extraordinary! Okay, this result is bogus. But what about the socalled "structural geometry" at the first link ?


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towr
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Re: Has anyone seen this before?
« Reply #1 on: May 8^{th}, 2009, 12:12am » 
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There's probably a reason why all replies in that thread are spam. It's not clear what he's trying to do, nor are his equations even correct in many cases.


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Noke Lieu
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Re: Has anyone seen this before?
« Reply #2 on: May 8^{th}, 2009, 1:03am » 
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It's awesome it's like a ghost town or something. ) registered users, 1 guest, when I looked.


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Benny
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Re: Has anyone seen this before?
« Reply #3 on: Jun 29^{th}, 2009, 12:15pm » 
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We start with 2 The second digit is twice the first, the third is twice the second, etc., with "carries" added in as we go along ... and then we stop when we find a number starting with 10. ................................2 ..............................42 ............................842 ........................16842 ......................136842 ......................736842 ..................14736842 ..................94736842 ..............1894736842 ............17894736842 ..........157894736842 ........1157894736842 ........3157894736842 ......63157894736842 ...1263157894736842 ...5263157894736842 105263157894736842 Moving the last 2 to the front gives 210526315789473684, manifestly twice 105263157894736842. This blog also contains Dr. Mutalik's explanation of the phenomenon in terms of arithmetic mod 19.

« Last Edit: Jun 29^{th}, 2009, 12:22pm by Benny » 
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Benny
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Re: Has anyone seen this before?
« Reply #5 on: Jun 29^{th}, 2009, 1:23pm » 
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on Jun 29^{th}, 2009, 12:34pm, towr wrote:http://en.wikipedia.org/wiki/Parasitic_number 
 Thanks for the link. These numbers are intriguing.


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Benny
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Re: Has anyone seen this before?
« Reply #6 on: Jul 14^{th}, 2009, 12:08pm » 
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Has anyone done this experiment: http://www.youtube.com/watch?v=UB1vd8614gg


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Benny
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Re: Has anyone seen this before?
« Reply #8 on: Sep 18^{th}, 2009, 2:57pm » 
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Binary Clock It has a detail PDF document


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Benny
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Re: Has anyone seen this before?
« Reply #9 on: Sep 28^{th}, 2009, 2:09pm » 
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Have you seen this book : A = B?


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Benny
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Re: Has anyone seen this before?
« Reply #10 on: Oct 13^{th}, 2009, 1:55pm » 
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The Book of Odds is an online statistical encyclopedia. The Book of Odds is a searchable online database of odds statements, the probabilities of everyday life.


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Benny
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Re: Has anyone seen this before?
« Reply #12 on: Sep 8^{th}, 2010, 10:44pm » 
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Furstenberg's Proof of the Infinitude of Primes Quote:Perhaps the strangest is the following topological proof by Fόrstenberg 
 http://primes.utm.edu/notes/proofs/infinite/topproof.html What makes this proof so strange?


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rmsgrey
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Re: Has anyone seen this before?
« Reply #13 on: Sep 9^{th}, 2010, 7:25am » 
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on Sep 8^{th}, 2010, 10:44pm, BenVitale wrote: If you look at the other proofs listed on that site, they are all couched in the language of arithmetic. They talk about taking a list of distinct primes (or a list of numbers that represent distinct primes), performing arithmetic operations on them, and producing a number that represents a new prime. The topological proof is, unsurprisingly, couched in the language of topology, so, while it's actually saying pretty much the same thing as the other proofs  that no finite set of primes can cover the integers with their multiples  there will always be some numbers that aren't divisible by any of the primes in the set, it's saying it in an unusual way. Also, it's a nonconstructive existence proof  it doesn't tell you anything about how to find these nonmultiples, just that they must exist  the other proofs all tell you where to look for your new prime.


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towr
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Re: Has anyone seen this before?
« Reply #15 on: Nov 30^{th}, 2011, 10:11pm » 
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It actually checks for nonprimes And it's a bit irregular for a regular expression, since you can't translate it to a finite state machine.


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