Paul Erdos, the wandering dervish
April 27th, 2010
It’s 1999 and I am reading in a special issue of Time magazine about the geniuses of the second millennium: Einstein, Einstein, Einstein and finally a short article about this “mad looking” guy and W O W…I discovered a wandering dervish, a nomadic mathematician: Paul Erdos!
Both his parents were high school mathematics teachers. Erdos (pronounced AIR-dosh) was as generous as he was brilliant with his ideas—never hoarding them and always sharing them with whoever was ready to give him a place to stay and work with him on the joyous and collaborative activity of mathematics: he would show up at their doorstep and say:” My Mind is Open!”

And this is how the myth of the Erdos Number or the “collaborative distance” between an author and Erdos was created: Erdos himself is assigned Erdos number 0. Mathematicians who have written papers with Erdos (511 by 2007) receive Erdos number 1. Writing a paper with someone having Erdos Number 1 earns the author Erdos Number 2, etc…
I made this image of the name of the 8,162 people with the Erdos Number of 2:
Addicted to coffee and amphetamines he was most of the time, super alert, achingly lucid. He wrote papers with more than 500 people, the optimum” intellectual promiscuity”…
Finding that “property is nuisance,” Erdos had no home, no car, no checks to write and no income taxes to pay; a mathematical pilgrim with no home and no job: the real wandering dervish who founded the field of discrete mathematics, which is the foundation of computer science. “In the years before the Internet, there was Paul Erdos.”
To check out the funny side of the ‘collaborative distance” visit xkcd.com:
Here are some funny quotes by Erdos:
“Finally I’m becoming stupider no more…”
“God may not play dice with the universe, but something strange is going on with the prime numbers.”
“There are three signs of senility. The first sign is that a man forgets his theorems. The second sign is that he forgets to zip up. The third sign is that he forgets to zip down.”
To see Erdos tell a funny joke go here
To see parts of N is a number, a documentary about him by George Paul Csicsery, go here
How Enrico Fermi killed all the Aliens
July 21st, 2009
An expression that can mean anything means nothing; when you want to please everybody, you please nobody.
Enrico Fermi, the great Italian physicist, killed all the aliens in 1950 by asking this simple/innocent question: “if extra-terrestrials exist, where are they?” This question has become the Fermi Paradox.
Even though I am a science fiction fan I do agree with the skeptics that, Houston, we have a problem:
a) the search for extraterrestrial intelligence (SETI) program to detect radio transmissions from other civilizations has been a failure.
b) the question of the Great Silence remains unsolved; if life is common, why don’t we detect their radio transmissions?
Today is the 40th anniversary of the first moon landing (July 20, 1969).
I remember the thrill of hearing about it on a hot summer day in Iran; the moon has not looked the same since!
Unlike my father, I am a lousy philatelist (postage stamp collector) but I was able to find the above page I bought in 1994—on the 25th anniversary of “the big step”—among my loose leaves.
The Drake Equation—an attempt to estimate the number of extraterrestrial civilizations in the Milky Way with which we might come into contact— is still fascinating to me but I see its light getting dimmer with every “silent year”…
N = R* × fp × nE × fl × fi × fc × L
This once serious equation looks more and more like this cartoon from this very funny site:
To commemorate the 40th anniversary of Neil Armstrong’s historic walk on the moon, Google is offering Internet users a virtual trip to the moon.
I empathize with Fermi’s passion for clarity. I am simply unable to let things be foggy. The Drake equation is literally meaningless because “an expression that can mean anything means nothing.”
Related and Suggested Posts and Resources:
Carl Sagan explaining the Drake Equation.
Google earth lands on the moon.
Other Life not likely to be intelligent.
The batman, the ratman and some other sordid adventures…
July 20th, 2008
I saw the new Batman movie yesterday and I liked it a lot. Heath Ledger was great and knowing he’s passed away makes the role even more frightening…
The fact that this latest batman is not cracking jokes like George Clooney’s gay version—with Robin—makes it easier to imagine a darker villain for the story. Christopher Nolan (of the Memento fame) has done a great job in these two last movies about the comic book franchise.
Michael Keaton and Val Kilmer were good as the dark prince but Christian Bale remains the best of the crop and Clooney the absolute worst. He should really stick to his Cary Grant roles. Take a look at the different batmen here.
What I have always liked about Batman is that he’s not a super-hero with funny super powers like the Spiderman, the creepy Superman or that idiot Hulk! I liked the Iron man for the same reason. The engineer in me cringes every time I have to watch a scientifically impossible film. Even though I am a serious Trekkie, I have never been a fan of the Star Wars. The whole mythology and mentor/princess/father/son bit turns me off. Dune has the same effect on me…
You don’t want to hear about my childhood crush on Mister Spock so I am going back to my ratman. Last week I had to ask a rat-man to secure my house from an epidemic of rats in Brentwood/Bel Air area…Bats are not rodents by the way and are genetically closer to us humans.
“Fascinating is a word I use for the unexpected. In this case, I should think interesting would suffice.” Spock
Beautiful naked bodies
May 12th, 2008
I saw these naked bodies last week in the science museum. I’ve been trying to see this exhibition for a long time. Gunther von Hagens‘ lifetime work is awe inspiring to say the least.
It’s all about real human bodies preserved through Plastination. It takes more than 1500 hours of work to transform a corps into a plastinate – the near perfect representation of a once living human body. It’s interesting to see how each body has it own unique features, even on the inside.
We usually forget that beneath even the most beautiful bodys’ skin lies a skeleton, muscles, several feet of intestines and lots of other goodies!
This whole experience reminded me of a great rainy day last year when I visited the small Dupuytren museum in the school of medicine in Paris. Just look at the skull of this man hit by a rifle stick in 1807 – he died after two days.
And if you are (unlike me) into mythology, you may enjoy seeing a real Kyklōps (cyclops). After being exposed to all of the above, I listened today to my favorite podcast about the history of Brain.
I am not all flowers and poetry after all, am I?
To see more of the beautiful Joey House go to my post sex, sex, sex here.
added on September 15th 2009:
I have thousands of visitors to this post; can somebody please let me know, who/what is sending you here aside the hunt for beautiful naked bodies?
Fast cars for dummies
April 14th, 2008
The Bugatti Veyron is the most expensive car in the world and it is street legal. The price varies between $1,200,000 to $1,500,000 (by the time I finish this post the falling dollar will make this European made car even more expensive). With a maximum speed of more than 400 km per hour, the Veyron is unmatched in the super sports category and offers a total of 1,001 hp; it is the fastest accelerating car reaching 0-60 in 2.5 seconds.
I took the above picture in Berlin a couple of years ago (the only one in this post I actually took) and decided to do some “soft” research about the subject to share with friends who can be as clueless about this as I am – try not to roll your eyes every time I am stating the obvious. Fasten your seat belts and get ready for testosterone galore:
Stock Car: a souped up version of a factory car that is only allowed to reach top speeds of approximately 187 mph (301 km/h) – the most prominent championship in stock car racing is the NASCAR championship. The 700 horsepower engines of these cars have been altered from their original factory design.
Daytona 500 is one of the most watched events on American television and the most important race in the NASCAR series – it is a 200-lap, 500 mile (805 km) race held annually in Daytona Beach, Florida. Even I have heard of Dale Earnhardt (both father and son)…
Formula One car: a single-seat, open cockpit, open wheel race car with substantial front and rear wings and engine positioned behind the driver. It’s made out of composites of carbon fiber, light but extremely strong. By regulation the cars use rear wheel drive and can handle 900 horsepower (in comparison my car has around 250 hp). The top speed of these cars is around 230 mph (370 km/h).
Formula One race, is the highest class of open wheeled auto racing . The “formula” in the name is a set of rules which all participants and cars must meet. The F1 world championship season consists of a series of races, known as Grands Prix. The big name in this category is Michael Schumacher and his Ferrari. The Indy Racing League is essentially the American version of F1.
Pit Stop: “in motorsports, a pit stop is where a racing vehicle stops in the pits during a race for refuelling, new tires, repairs, mechanical adjustments, a driver change, or any combination of the above” but what is interesting and not so obvious to the non-initiated, is that pit stop work is carried out by up to twenty mechanics (pit crew) and that pit strategy is one of the most important features of the race.
So, this wasn’t that bad, was it? The next step for me would be to actually watch a car race on tv and witness the thunder of roaring engines beating their chests…
Coming to life with an iPod
November 5th, 2007
I love my iPod! It’s ancient but I don’t want to get a new one yet; I have to admit that having a portable music library has not been my primary concern but the podcasts…oh the podcasts…

Many of my friends have asked about subscribing to podcasts with an iPod (or any other MP3) – this is how I listen to my news from around the world – it’s like TiVo-ing your favorite radio shows; you have to install itunes and take it from there:
1) if you don’t already have itunes download it for free at http://www.apple.com/itunes/download/
2) install it
3) go to itune store/podcast http://www.apple.com/itunes
4)search for shows you like halfway through the screen:

And the rest is pretty easy. Here are some of the things I listen to: NPR morning news, scientific american , slate magazine, 2000 ans d’histoire, in our time with melvyn bragg, Radio Lab, NYT’s Frank Rich/Maureen Dowd , etc… I do download a “medley” of different stuff and I hardly listen to music on my ipod but that’s just me – the beauty of it all is that I can listen to what I want when I want and with a little gadget (iTrip), it even plays on my car radio.

Five minutes in the morning to download the podcasts from my computer and this can carry me through Life’s rush-hour…Happiness is a lot of small/little things.
Vasa Mihich
October 6th, 2007
I went to Vasa’s studio a couple of years ago and fell in love with his exquisite sculptures. His work is awe-inspiring in its simplicity, vivid colors and elegant lines.

Carbon Footprint, global swarming
September 15th, 2007
I feel kind of stressed out about this whole carbon footprint calculations. Just took a quiz with them and i am not proud of the result! I am not much of a carnivore but now i have to worry about that “once in a while” steak. A Carbon Footprint is a measure of the impact human activities have on the environment in terms of the amount of greenhouse gases produced, measured in units of carbon dioxide. Reading the Deep Economy, has been revelatory to say the least. I also suggest Bill Mckibben’s article in the NY review of books.
I just listened to the Slate podcast called global swarming and i have to admit that i agree with the idea. On a more cheerful note Alice Waters should cook for all of us…
Golden Ratio, Divine Proportion and other pretty things
September 12th, 2007
The golden ratio has fascinated the great mathematical minds for ages but it came to sit on millions of people’s bed table thanks to the Da Vinci Code. The book manages to remain cartoonish even when describing the “holy Phi” and the Fibonacci series but Dan Brown’s for another day, another post.
In mathematics and the arts, two quantities are in the golden ratio if the ratio between the sum of those quantities and the larger one is the same as the ratio between the larger one and the smaller. The golden ratio is approximately 1.6180339887.
The romantics see the Phi in everything beautiful like the solar system, the plants, the human body, music, the DNA and architecture; I designed my first Golden Rectangle when I first learned graphic art years ago (above) – I made the one below last night; I believe that the nautilus seashells are the most exquisite examples of the divine proportion.
Just watched the movie Pi; pretty interesting.
Time, Poetry and Einstein
September 9th, 2007
I am obsessed with Time; not only I have a weakness for wrist watches, I have several clocks around my house. Only when I am traveling (especially in france where Time is an elastic commodity) the passage of time becomes kind of blurred but I’ve never had any desire to go back nor forth in Time; the whole notion of a Time Machine has never appealed to me (not even to my trekkie side). Entropy rules supreme!
Aragon, one of my favorite french poets, has written his most beautiful piece about Time so have many other luminaries. “Newton, forgive me…” said Einstein who wrote his most beautiful piece about the same subject…
“Je vais te dire un grand secret Le temps c’est toi
Le temps est femme Il a
Besoin qu’on le courtise et qu’on s’asseye
A ses pieds le temps comme une robe à défaire
Le temps comme une chevelure sans fin
Peignée
Un miroir que le souffle embue et désembue
Le temps c’est toi qui dors à l’aube où je m’éveille…
Louis Aragon
I love this piece by Diana Calvario, my new friend at redbubble.
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