The ultimate pi day, 3/14/15, of the century is only a little over a week away. Any good recipes you'd like to share? Brent
No, but I'd like to bemoan the horror that is middle-Endian date formats. I so prefer to write dates as 2015-03-14.
Sent: Wednesday, March 04, 2015 at 2:45 AM From: meekerdb <meekerdb@verizon.net> To: math-fun <math-fun@mailman.xmission.com> Subject: [math-fun] pi
The ultimate pi day, 3/14/15, of the century is only a little over a week away. Any good recipes you'd like to share?
Brent
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Too bad nobody noticed on May 8, 1732 that it was the perfect Big-endian day to celebrate the square root of three (1732-05-08). Jim Propp On Tuesday, March 3, 2015, Adam P. Goucher <apgoucher@gmx.com> wrote:
No, but I'd like to bemoan the horror that is middle-Endian date formats.
I so prefer to write dates as 2015-03-14.
Sent: Wednesday, March 04, 2015 at 2:45 AM From: meekerdb <meekerdb@verizon.net <javascript:;>> To: math-fun <math-fun@mailman.xmission.com <javascript:;>> Subject: [math-fun] pi
The ultimate pi day, 3/14/15, of the century is only a little over a week away. Any good recipes you'd like to share?
Brent
_______________________________________________ math-fun mailing list math-fun@mailman.xmission.com <javascript:;> https://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun
_______________________________________________ math-fun mailing list math-fun@mailman.xmission.com <javascript:;> https://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun
I first memorized sqrt(3) ~ 1.732 since floor(10^3 sqrt(3)) is when George Washington was born. --Dan
On Mar 3, 2015, at 10:13 PM, James Propp <jamespropp@gmail.com> wrote:
Too bad nobody noticed on May 8, 1732 that it was the perfect Big-endian day to celebrate the square root of three (1732-05-08).
Re 24: gosper.org/24throot.pdf DanA>Espcially l and 1 look so similar that I never use lowercase L, and hate to encounter it, in math writing. When I really want to use a non-capital L — typically when giving a talk — I like a scriptish L, like this if it survives e-mail: ℓ ("Script small L" on my Mac). --Dan Amazingly, something xmission.com didn't trash. I wonder why Mathematica doesn't use a less ambiguous font. (And in case you wondered, In[126]:= EntityValue[Entity["Planet", "Earth"], EntityProperty["Planet", "AverageDistanceFromEarth"]] Out[126]= Quantity[0, "AstronomicalUnit"] ) We should also look out for 314th anniversaries of significant things. (picentennials). If we just miss one, "Well, the *real* picentennial is the 314.159th anniversary..." On 2015-03-03 22:13, James Propp wrote:
Too bad nobody noticed on May 8, 1732 that it was the perfect Big-endian day to celebrate the square root of three (1732-05-08).
Jim Propp
On Tuesday, March 3, 2015, Adam P. Goucher <apgoucher@gmx.com> wrote:
No, but I'd like to bemoan the horror that is middle-Endian date formats.
I so prefer to write dates as 2015-03-14.
Sent: Wednesday, March 04, 2015 at 2:45 AM From: meekerdb <meekerdb@verizon.net <javascript:;>> To: math-fun <math-fun@mailman.xmission.com <javascript:;>> Subject: [math-fun] pi
The ultimate pi day, 3/14/15, of the century is only a little over a week away. Any good recipes you'd like to share?
Brent
In[153]:= NestList[Re[#-I*E^(I*#)]&,3`69,5] Out[153]= {3.00000000000000000000000000000000000000000000000000000000000000000000, 3.14112000805986722210074480280811027984693326425226558415188264123242, 3.1415926535721955587348885681408797467429928172149979247077932412017, 3.1415926535897932384626433832795019759271524572209636148541798880229, 3.1415926535897932384626433832795028841971693993751058209749445923078, 3.1415926535897932384626433832795028841971693993751058209749445923078} Hmm, that looks pretty Tweetable. \--rwg
On the subject, one of my favorite rules of thumb is that pi seconds is roughly a nanocentury. --Dan
On Mar 4, 2015, at 1:26 PM, rwg <rwg@sdf.org> wrote:
We should also look out for 314th anniversaries of significant things. (picentennials). If we just miss one, "Well, the *real* picentennial is the 314.159th anniversary..."
Adam, Perusing your lovely math blog once again, I noticed your Nov. 10, 2014 post about a new holyhedron with only 12 sides. At first I was very excited, and also amazed he got it so low. Then I read his description of his examples. The problem is, they are not holyhedra. As Conway described the problem to math-fun (as far as I know, this was the first place he publicly mentioned it), a holyhedron is a polyhedron in 3-space that is a connected component of the boundary of a 3-manifold, each of whose faces is not simply connected. More specifically, Conway defined it as a boundary component of a "Boolean compound of finitely many closed half-spaces" — if I remember his wording — each of whose faces, etc. It *certainly* must be a topological 2-manifold, unlike Nathan Ho's examples. But I will need to be reminded how to access the math-fun archives, and check to be sure of his exact words. (I also thought I played some role in the coining of the word "holyhedron" — which I remember Conway felt might offend some religious folk unless an E were added to make "holeyhedron". But again, checking the archives will clarify my somewhat foggy memory about the details of what happened lo those 17 years ago.) Regards, Dan
No recipes, but here are two pi-related vanity bitcoin addresses: 1piBTCsBnCZm5Rv83c7oMR5kvU7JvzJy3 1PiBTCsfBaBaSrxZ1QNX4u7cy92rkqsr3G The former also has 3.14159265 BTC in it: https://blockchain.info/address/1piBTCsBnCZm5Rv83c7oMR5kvU7JvzJy3 On Wed, Mar 4, 2015 at 9:45 AM, meekerdb <meekerdb@verizon.net> wrote:
The ultimate pi day, 3/14/15, of the century is only a little over a week away. Any good recipes you'd like to share?
Brent
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participants (7)
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Adam P. Goucher -
Dan Asimov -
Dan Asimov -
James Propp -
meekerdb -
rwg -
Warut Roonguthai