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LeopoldS

First proof that infinitely many prime numbers come in pairs : Nature News & Comment - 2 views

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    did you see this?
LeopoldS

Physicists twist water into knots : Nature News & Comment - 3 views

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    More than a century after the idea was first floated, physicists have finally figured out how to tie water in knots in the laboratory. The gnarly feat, described today in Nature Physics1, paves the way for scientists to experimentally study twists and turns in a range of phenomena - ionized gases like that of the Sun's outer atmosphere, superconductive materials, liquid crystals and quantum fields that describe elementary particles.

    Lord Kelvin proposed that atoms were knotted "vortex rings" - which are essentially like tornado bent into closed loops and knotted around themselves, as Daniel Lathrop and Barbara Brawn-Cinani write in an accompanying commentary. In Kelvin's vision, the fluid was the theoretical 'aether' then thought to pervade all of space. Each type of atom would be represented by a different knot.

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    Kelvin's interpretation of the periodic table never went anywhere, but his ideas led to the blossoming of the mathematical theory of knots, part of the field of topology. Meanwhile, scientists also have come to realize that knots have a key role in a host of physical processes.
LeopoldS

Should business be allowed to patent mathematics? - opinion - 18 March 2013 - New Scien... - 1 views

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    ridiculous next frontier for patenting ... mathematics!!!!!
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    Creating jobs in the 21st century. Banks and insurance companies are firing mathematicians because they follow logic's rules when calculating product costs and rates. However, this work is being shifted since years to the marketing departments. Didn't you know that marketing experts are able to perform complex calculations as well, even improving the equations by adding market developments?

    Anyway, thousands of mathematicians need a job now, why not in the patent offices?
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    Who finds the irony can keep it.
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    should I take these as an indication of news from the bankers concerning your business case?
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    this would trigger innovation, and kill mathematics! The world is crazy...
    imagine a mathematician that will have to pay to use a demonstration for his own demonstration... haha. And the interviewed guy in the article say that this would benefit mathematicians !!! what a joke !
    And all the schools that will have to pay billions to Euclid's heirs !
    This would kill physics too, and all domains that use mathematics as a tool !
LeopoldS

Three-body Gallery - 2 views

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    loads of new solution classes to the three body problem found by Bulgarians ... Francesco and Sante, you will love these
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    ups, should have looked at diigo before ... Luis was faster again
LeopoldS

Thinking In Network Terms | Conversation | Edge - 0 views

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    For the Barabasi fans ...
LeopoldS

Erdős-Bacon number - Wikipedia, the free encyclopedia - 2 views

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    ever heard of the Erdős-Bacon number? :-)
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    There is a tool (http://www.ams.org/mathscinet/collaborationDistance.html) which computes your Erdös number.

    But who cares about Kevin Bacon?
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    and actors probably ask who cares about Erdős :)

    The network of actors who co-star in movies is a famous one among networks people.
    Kevin Bacon became famous in that network because of fans of his who could from memory trace the paths of a large number of actors back to him :)
    see: http://en.wikipedia.org/wiki/Six_Degrees_of_Kevin_Bacon#History

    If you have you publications in http://academic.research.microsoft.com/, it gives you a nice tool to visualize your graph up to Erdős. Apparently I have a path of length 4, and several of length 5: http://academic.research.microsoft.com/VisualExplorer#36695545&1112639
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    and for the actors http://oracleofbacon.org/
Luís F. Simões

Polynomial Time Code For 3-SAT Released, P==NP - Slashdot - 0 views

  • "Vladimir Romanov has released what he claims is a polynomial-time algorithm for solving 3-SAT. Because 3-SAT is NP-complete, this would imply that P==NP. While there's still good reason to be skeptical that this is, in fact, true, he's made source code available and appears decidedly more serious than most of the people attempting to prove that P==NP or P!=NP. Even though this is probably wrong, just based on the sheer number of prior failures, it seems more likely to lead to new discoveries than most. Note that there are already algorithms to solve 3-SAT, including one that runs in time (4/3)^n and succeeds with high probability. Incidentally, this wouldn't necessarily imply that encryption is worthless: it may still be too slow to be practical."
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    here we go again...
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    slashdot: "Russian computer scientist Vladimir Romanov has conceded that his previously published solution to the '3 SAT' problem of boolean algebra does not work."
Luzi Bergamin

International Congress of Mathematicians 2010, Hyderabad » Prize Winners 2010 - 0 views

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    This years winners of the fields medal. Some about mathematical physics but NOT string theory. Hey, I didn't even know that this still exists... :-)
Joris _

Gravity-defying ramps take illusion prize : Nature News - 6 views

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    excellent !
Luzi Bergamin

Finnish Centre of Excellence in ANALYSIS AND DYNAMICS RESEARCH - 2 views

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    In case you are lacking some catchy ideas, here is the Finnish version of research that Leo certainly likes.
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    but at the end is Navier Stokes and turbulence and a few papers on fractals...... catchy?
LeopoldS

SpringerLink - Buchkapitel - 1 views

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    the wave-based control Gianluigi was speaking about today ....
LeopoldS

THEORY OF GAMES AND ECONOMIC MISBEHAVIOR Edge 295 - 0 views

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    very nice article - though a bit long but I am sure that you will also enjoy reading it ....
LeopoldS

Traders Profit With Computers Set at High Speed - NYTimes.com - 0 views

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    following Francesco's post from Slatdot, this is now the original article from the NYT ... enjoy
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    completely crazy these high speed transactions... they should rather put their efforts in science...!
LeopoldS

Edge 285 - videos of a conference combining mathematicians, physicists and economists o... - 0 views

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    have not looked at them yet but the tiltle sounded intriguing ...
nikolas smyrlakis

New Pattern Found in Prime Numbers - 0 views

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    wow - how comes that after so many years there are still some hidden "patterns" in primes? does however not seem to help for predicting where to discover new higher prime numbers, correct?
ESA ACT

Baby birds can do arithmetic - 0 views

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    Chicks' ability to add and subtract objects as they were moved behind two screens.
ESA ACT

The Mathematics Genealogy Project - 0 views

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    find your scientific ancestors !
ESA ACT

Slashdot | Towards a Wiki For Formally Verified Mathematics - 0 views

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    for real geeks, but maybe something interesting in it...
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