Posts

May 17, 2013

+

mio.py is “my” io library for Raspberry Pi. At present it is a kind of “hello world” program that demonstrates how work with one digital input, e.g., a switch, and one digital output, e.g., an LED. Below are (a) a photo of the Raspberry rigged up with a circuit managed by miO, (b) a description […]

+

2:01 PM | #442 Seismic squares – A new minimal geometric composition each...

#442 Seismic squares – A new minimal geometric composition each day

+

10:58 AM | Is It Phi Day Yet?

There are several pressing matters that needs to be resolved. Let’s use the following poll to resolve the first… Don’t be swayed by the giant. The second matter concerns the date of Phi Day. As if it weren’t enought that the contrivance known as Pi Day is celebrated on 3/14, simply because the three digits of that […]

+

6:00 AM | Installation in Red by Qureshi

And How Many Rains Must Fall Before the Stains Are Washed Clean? This line in the famous poem by the Urdu poet Faiz Ahmed Faiz (1911-1984) is a verbal counterpart to the installation at the Metropolitan Museum of Art by Pakistani artist Imran Qureshi. See the New York Times article, May 16, 2013 by Ken […]

May 16, 2013

+

3:29 PM | Zero

WORLD’S OLDEST ZERO? More about zero — Gwalior India (Bill Casselman)

+

2:00 PM | #441 Interference (upwards) – A new minimal geometric...

#441 Interference (upwards) – A new minimal geometric composition each day

+

9:45 AM | Cool Raspberry Pi

A collection of links to projects for the Raspberry Pi. Just two for now, but the list will grow. Time-lapse photography Internet radio

+

3:36 AM | Reflective calculi

This is mostly for my own benefit. 1. Start with term recursion equation that's fringe-like in G, such as T(M)(X)(G) = G + X + XM(X) + M(X)^2 const var lam app T1 = mu M.T(M) is lambda calculus T2 = mu X.T1(X) is reflective lambda calculus with ground terms G. T2 is a monad […]

May 15, 2013

+

2:01 PM | #440 Passers-by – A new minimal geometric composition each day

#440 Passers-by – A new minimal geometric composition each day

May 14, 2013

+

8:23 PM | Python

To improve your life/work balance, please go to XKCD.

+

3:16 PM | The Icosasphere

Marianne Moore (1887-1972) has fun with the sounds of words -- including a number of math terms -- in her playful poem that celebrates inventive constructions from bird nests to a steel sphere-like icosahedron to the Pyramids of Egypt. The Icosasphere by Marianne Moore“In Buckinghamshire hedgerows the birds nesting in the merged green density, weave little [â€¦]

+

2:01 PM | #439 Pivotal – A new minimal geometric composition each day

#439 Pivotal – A new minimal geometric composition each day

+

12:00 AM | ISS Music Video

ISS Music Video Is this the most expensive music video ever? —Various Youtube commenters For starters, a big welcome home to Chris Hadfield, who returned to Earth last night after a memorable stint as commander of the International Space Station. Commander Hadfield’s video performance of Space Oddity was an instant hit, and prompted many commenters to ask whether it should count as the most expensive music video ever made. At a total lifetime cost in the neighborhood of $150 [â€¦]

May 13, 2013

+

2:00 PM | #438 Queen of thorns – A new minimal geometric composition each...

#438 Queen of thorns – A new minimal geometric composition each day

+

7:52 AM | PiRadio

Below is a photo of “PiRadio”, currently playing Cosmitto Coffee: Miles Davis & More – I’m Oldfashioned on my Raspberry Pi. The installation procedure is given below the photo, along with a short list of internet radio stations. I’ve also given directions on how to find the URL, aka web address, of stations you would […]

May 12, 2013

+

4:56 PM | Interview: Matt Parker, Stand-Up Maths

Matt Parker is a funny dude — and a bit warped. He created a show called Your Days are Numbered which, as the name implies, is about the statistics of death. The tagline reads, “You’ve got a 0.000043% chance of dying during this show.” He claims that his favorite number is 3,345, because 33 + 33 + 44 + 55 = 3,345. And he […]

+

7:30 AM | PiFace – the very basics

PiFace is an IO board for the Raspberry Pi computer — 8 buffered inputs, 8 outputs, and two relays that theoretically can handle 10 amperes at 230 volts. See Gordon’s Projects for a full review. The model allows you to disconnect the relays from two of the outputs, and there is a Python interface. To […]

May 11, 2013

+

11:39 AM | ΟΛΟΙ ΟΙ ΚΑΘΗΓΗΤΕΣ ΕΙΝΑΙ ΛΑΜΟΓΙΑ κι άλλες post hoc επισφάλειες που επισύρει η ατελής επαγωγή! !!

Το κλίμα των ημερών, εν όψει των Πανελλαδικών Εξετάσεων που αφορούν μια μεγάλη μερίδα της ελληνικής κοινωνίας, απαιτεί - τουλάχιστον όσοι από εμάς εμπλεκόμαστε ενεργά στην εκπαίδευση - να στρατευθούμε στη διατήρηση της λογικής αντιμετώπισης των γενικότερων προβλημάτων, [â€¦]

May 10, 2013

+

9:04 PM | Mochizuki and the ABC Conjecture

Article on Mochizuki’s work. THE PARADOX OF PROOF by Carolyn Chen On August 31, 2012, Japanese mathematician Shinichi Mochizuki posted four papers on the Internet. The titles were inscrutable. The volume was daunting: 512 pages in total. The claim was audacious: he said he had proved the ABC Conjecture, a famed, beguilingly simple number theory […]

+

2:01 PM | #437 Aether – A new minimal geometric composition each day

#437 Aether – A new minimal geometric composition each day

+

10:22 AM | Sustainability and Collapse

Last Tuesday evening mathematician Charles Hadlock offered an excellent lecture -- "Sustainability and Collapse" -- at the MAA Carriage House. Hadlock's presentation offered examples and arguments from his recently published book, Six Sources of Collapse (MAA, 2012). This must-read book describes investigation into common dynamics of disaster processes from the extinction of the passenger pigeon to the Chernobyl accident to extreme weather and . . [â€¦]

May 09, 2013

+

2:01 PM | #436 Vortex – A new minimal geometric composition each day

#436 Vortex – A new minimal geometric composition each day

+

1:03 PM | Seoul by night #7

No summary available for this post.

+

12:45 PM | Seoul by night #6

No summary available for this post.

+

12:40 PM | Seoul by night #5: my office

My office in Seoul, Korea, near KIAS (Korean Institute for Advanced Study).

May 08, 2013

+

2:01 PM | #435 Coral – A new minimal geometric composition each day

#435 Coral – A new minimal geometric composition each day

+

9:14 AM | Seurat #1

Further experiments with Seurat. The code is better organized, and I have more control over “artistic” parameters such as color velocity, particle spacing, and alpha transparency. Code for Seurat | Code for Arduino Black box to control Seurat

+

8:57 AM | All Geometry Daily prints (up to #427) are now available as...

All Geometry Daily prints (up to #427) are now available as digital prints at Society6. They even ship for free if you use the following link: http://society6.com/Tilmn?promo=19711a Dress up your walls!

May 07, 2013

+

9:34 PM | On Libraries – Isaac Asimov

No summary available for this post.

+

9:22 PM | Seoul by night #4

No summary available for this post.

May 17, 2013

May 16, 2013

May 15, 2013

May 14, 2013

May 13, 2013

May 12, 2013

May 11, 2013

May 10, 2013

May 09, 2013

May 08, 2013

May 07, 2013

Posts with Citations

User Activity