Author 
Topic: Has anyone seen this before? (Read 7663 times) 

Benny
Uberpuzzler
Gender:
Posts: 1024


Has anyone seen this before?
« on: May 7^{th}, 2009, 5:30pm » 
Quote Modify

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 ?


IP Logged 
If we want to understand our world or how to change it we must first understand the rational choices that shape it.



towr
wu::riddles Moderator Uberpuzzler
Some people are average, some are just mean.
Gender:
Posts: 13730


Re: Has anyone seen this before?
« Reply #1 on: May 8^{th}, 2009, 12:12am » 
Quote Modify

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.


IP Logged 
Wikipedia, Google, Mathworld, Integer sequence DB



Noke Lieu
Uberpuzzler
pen... paper... let's go! (and bit of plastic)
Gender:
Posts: 1884


Re: Has anyone seen this before?
« Reply #2 on: May 8^{th}, 2009, 1:03am » 
Quote Modify

It's awesome it's like a ghost town or something. ) registered users, 1 guest, when I looked.


IP Logged 
a shade of wit and the art of farce.



Benny
Uberpuzzler
Gender:
Posts: 1024


Re: Has anyone seen this before?
« Reply #3 on: Jun 29^{th}, 2009, 12:15pm » 
Quote Modify

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 » 
IP Logged 
If we want to understand our world or how to change it we must first understand the rational choices that shape it.



Benny
Uberpuzzler
Gender:
Posts: 1024


Re: Has anyone seen this before?
« Reply #5 on: Jun 29^{th}, 2009, 1:23pm » 
Quote Modify

on Jun 29^{th}, 2009, 12:34pm, towr wrote:http://en.wikipedia.org/wiki/Parasitic_number 
 Thanks for the link. These numbers are intriguing.


IP Logged 
If we want to understand our world or how to change it we must first understand the rational choices that shape it.



Benny
Uberpuzzler
Gender:
Posts: 1024


Re: Has anyone seen this before?
« Reply #6 on: Jul 14^{th}, 2009, 12:08pm » 
Quote Modify

Has anyone done this experiment: http://www.youtube.com/watch?v=UB1vd8614gg


IP Logged 
If we want to understand our world or how to change it we must first understand the rational choices that shape it.



Benny
Uberpuzzler
Gender:
Posts: 1024


Re: Has anyone seen this before?
« Reply #8 on: Sep 18^{th}, 2009, 2:57pm » 
Quote Modify

Binary Clock It has a detail PDF document


IP Logged 
If we want to understand our world or how to change it we must first understand the rational choices that shape it.



Benny
Uberpuzzler
Gender:
Posts: 1024


Re: Has anyone seen this before?
« Reply #9 on: Sep 28^{th}, 2009, 2:09pm » 
Quote Modify

Have you seen this book : A = B?


IP Logged 
If we want to understand our world or how to change it we must first understand the rational choices that shape it.



Benny
Uberpuzzler
Gender:
Posts: 1024


Re: Has anyone seen this before?
« Reply #10 on: Oct 13^{th}, 2009, 1:55pm » 
Quote Modify

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.


IP Logged 
If we want to understand our world or how to change it we must first understand the rational choices that shape it.



Benny
Uberpuzzler
Gender:
Posts: 1024


Re: Has anyone seen this before?
« Reply #12 on: Sep 8^{th}, 2010, 10:44pm » 
Quote Modify

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?


IP Logged 
If we want to understand our world or how to change it we must first understand the rational choices that shape it.



rmsgrey
Uberpuzzler
Gender:
Posts: 2850


Re: Has anyone seen this before?
« Reply #13 on: Sep 9^{th}, 2010, 7:25am » 
Quote Modify

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.


IP Logged 



towr
wu::riddles Moderator Uberpuzzler
Some people are average, some are just mean.
Gender:
Posts: 13730


Re: Has anyone seen this before?
« Reply #15 on: Nov 30^{th}, 2011, 10:11pm » 
Quote Modify

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.


IP Logged 
Wikipedia, Google, Mathworld, Integer sequence DB



