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Index > Heap > Pi Day 3-14 (Wednesday)

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HyperVista



Joined: 18 Apr 2005
Posts: 691
Location: Virginia, USA
HyperVista
http://news.yahoo.com/s/ap/20070311/ap_on_re_us/the_church_of_pi

If you haven't already seen this movie, I recommend getting it and watching it on Pi day. It's bizzarly entertaining Smile

http://www.pithemovie.com/


Last edited by HyperVista on 12 Mar 2007, 18:40; edited 1 time in total
Post 12 Mar 2007, 12:12
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tom tobias



Joined: 09 Sep 2003
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tom tobias
HyperVista wrote:
....watching it on Pi day...

Ummm, except that Pi was discovered, as I understand it, by Archimedes in the third century B.C.E., who computed its value to two decimal places, 3.14.
At this time, the Greeks employed a lunar calendar:
http://www.internet-at-work.com/hos_mcgrane/greece/eg_greece_8.html
Two different sources are given for the computed estimate of 3.14159 in the fifth or sixth century Common Era (a.k.a. Anno Domini):
http://www.geom.uiuc.edu/~huberty/math5337/groupe/overview.html
A Chinese, and a Hindu:
Aryabhatta
http://www.hinduwisdom.info/articles_hinduism/27.htm
A somewhat different history is given here:
http://people.bath.ac.uk/ma3er/timeline.html
Point is, most of these guys in ancient times, whether living in Greece, Mesopotamia, India, or China, were working off the LUNAR calendar,
http://stardate.org/nightsky/moon/
so, Pi date would correspond (this year), in solar calendar terms, to 14 days after the third new moon , not 14 March, because the Lunar new year began on 18 February 2007. In other words, from the lunar calendar perspective, the fourteenth day of the third month occurs on 01 May 2007, in solar calendar terms--> MAY DAY!!
Smile
Post 12 Mar 2007, 18:17
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HyperVista



Joined: 18 Apr 2005
Posts: 691
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HyperVista
tom, now THAT is a most interesting offset calculation.
Post 12 Mar 2007, 18:31
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shoorick



Joined: 25 Feb 2005
Posts: 1605
Location: Ukraine
shoorick
as well as we have dd.mm.yy notation here it is 14.3 day on some part of the world Wink
once i thought about US notation that possible in US there are 30 monthes by 12 days Very Happy (just joke Wink )
Post 15 Mar 2007, 08:30
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MHajduk



Joined: 30 Mar 2006
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MHajduk
shoorick wrote:
once i thought about US notation that possible in US there are 30 monthes by 12 days Very Happy
No, there are 13 moon months of 28 days each plus one (or two, if the year is leap) "fatal" ending days. Laughing Laughing
Post 15 Mar 2007, 08:49
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HyperVista



Joined: 18 Apr 2005
Posts: 691
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HyperVista
shoorick wrote:
Quote:
possible in US there are 30 monthes by 12 days Laughing

LOL shoorick Laughing
Reminds me of the story about a man who went into a pizza restaurant and ordered a large pizza. The cook asked him if he wanted it cut into 8 pieces or 16 pieces. To which the man replied, "better cut it into 8 pieces, I don't think I can eat 16." Smile
Post 15 Mar 2007, 11:26
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YONG



Joined: 16 Mar 2005
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YONG
MHajduk wrote:
No, there are 13 moon months of 28 days each plus one (or two, if the year is leap) "fatal" ending days. Laughing Laughing

@MHajduk: By "fatal", do you mean "out of cash"? Or "fertilizable" (in case you are talking about girls)? Laughing

YONG
Post 16 Mar 2007, 12:09
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MHajduk



Joined: 30 Mar 2006
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MHajduk
YONG wrote:
@MHajduk: By "fatal", do you mean "out of cash"? Or "fertilizable" (in case you are talking about girls)? Laughing
I think, that "fatal" could mean both. Wink In these days is better don't do anything Laughing - it is a some kind of "Sundays" without own date. Very Happy
Post 16 Mar 2007, 17:30
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MHajduk



Joined: 30 Mar 2006
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MHajduk
BTW, my joke was inspired by and based on project of new calendar proposed by French philosopher Auguste Comte in 1849 (http://personal.ecu.edu/mccartyr/13-month.htm).

He postulated to divide year into 13 months of 28 days each (13*28 = 364) plus extra one or two days at the end of the year.

This very simple and natural calendar had many fans in USA at beginning of 20th century. I think that it was never introduced because of superstition which make us believe in "unluckiness" of number 13. Very Happy
Post 17 Mar 2007, 19:55
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tom tobias



Joined: 09 Sep 2003
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tom tobias
MHajduk wrote:
...superstition which make us believe in "unluckiness" of number 13...

The technical term for that irrational fear is "triskaidekaphobia"
http://dictionary.reference.com/browse/triskaidekaphobia
Where does this fear of 13 originate?
This is a debatable point. Some point to ancient Germanic/Scandinavian folklore, others point to even more ancient Egyptian traditions (12 stages of life, then the 13th for the afterlife), many of which crept into the "Bible", such as belief in virgin birth, and arising from the dead. Other sources suggest that the Hindus were the source of the myth that 13 is an unlucky number. Many people in modern times have pointed to Leonardo's famous painting depicting the 13 figures at the "last supper". Personally, I am ignorant, I have no idea why anyone would consider it imprudent to submit a response to the FASM forum with 13 lines of text.....
umm, or symbols: Smile
Post 19 Mar 2007, 10:12
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MHajduk



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MHajduk
tom, It's strange, but on my monitor Your post has exactly 13 lines of text (including quotation)... Laughing
Post 19 Mar 2007, 10:25
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YONG



Joined: 16 Mar 2005
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Location: 22° 15' N | 114° 10' E
YONG
'Okay, Houston, we've had a problem here.' - Apollo 13.

Perhaps it was just a coincidence! Smile

YONG
Post 19 Mar 2007, 11:59
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vid
Verbosity in development


Joined: 05 Sep 2003
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vid
i wonder: is it the value of 13, or the notation consisting of digit 1 and digit 3?

if first is right, we ASM coders should also fear of mysterious magical threat of D. Aren't you guys afraid? All all of you dared to use this dangerous symbol. You may not believe in it, but why should you risk? Haven't you heaerd about many cases of terrible incidents that were connected with symbol D? There are too many of them to be just by chance, there just have to be some connection, don't be blind.

Also, if the danger lies in notation using digit 1 and digit 3, then 13(radix 4) = 7 (decimal), 13 (radix 5) = 8 (decimal), etc... That means EVERY single value above 7 posseses the evil spirit within. Man, are we doomed...

And that is not all. I believe Tomasz bears more warning of "13" in n-adic numbers

Smile
Post 19 Mar 2007, 12:21
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MHajduk



Joined: 30 Mar 2006
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MHajduk
vid, I guess, that by "radix" You mean "base of number system"?

In that case not ever number will be "fatal" Very Happy :

Base | Representation of "13"
---------------------------------
2 | 1101
3 | 111
4 | 31
5 | 23
6 | 21
7 | 16
8 | 15
9 | 14
10 | 13
11 | 12
12 | 11
13 | 10
14 | (13)
15 | (13)
16 | (13) or D in "traditional" hexadecimal system
17 | (13)
... | ...

For all number systems with base > 13 number "13" becomes a digit, which is noted as a symbol "(13)". Very Happy

For example, number system with base 17 has following digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, (10), (11), (12), (13), (14), (15), (16).

Number 17 in this system is noted... 10 (1*17^1 + 0*17^0). Very Happy
Post 19 Mar 2007, 16:36
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vid
Verbosity in development


Joined: 05 Sep 2003
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vid
MHajduk: I fail to see your point... Maybe i expressed myself wrongly:
- In first part i was talking about value 13, focusing on it's hexadecimal representation.
- in second part i was talking about sequence of digits 1 and 3.
Post 19 Mar 2007, 17:32
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MHajduk



Joined: 30 Mar 2006
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MHajduk
OK. I was talking about representation of number 13 in different number systems. Very Happy
Post 19 Mar 2007, 18:08
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tom tobias



Joined: 09 Sep 2003
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tom tobias
MHajduk wrote:
...I was talking about representation of number 13 in different number systems...
http://www.mcs.surrey.ac.uk/Personal/R.Knott/Fibonacci/
Post 19 Mar 2007, 18:39
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MHajduk



Joined: 30 Mar 2006
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MHajduk
Thanks, interesting site Very Happy, especially section "The Fibonacci base system".

BTW, in this system 13 is represented as 100000. Smile
Post 19 Mar 2007, 19:32
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