September 22, 2014

12:18 PM | An der schönen blauen Donau
Filed under: pictures, Running, Travel Tagged: Austria, Donau, skyscrapers, sunrise, Vienna
9:31 AM | Anti-anti Banach-Tarski arguments
Many people, more often than not these are people from analysis or worse (read: physicists, which in general are not bad, but I am bothered when they think they have a say in how theoretical mathematics should be done), would say ridiculous things like “We need to omit the axiom of choice, and keep only […]
8:39 AM | Winter School on Paradoxes and Dilemmas -- Groningen
On January 26th-27th 2015, the Faculty of Philosophy of the University of Groningen will host a short Winter School aimed at advanced undergraduate students and early-stage graduate students. The theme of the winter school is Paradoxes and Dilemmas, and it will consist of 6 tutorials where the topic will be discussed from different viewpoints: theoretical philosophy, practical philosophy, and the history of philosophy. As such, the Winter School may be of interest to at least some of the M-Phi […]
7:44 AM | Mathematical beauty
Michael Atiyah quoted Hermann Weyl in the opening talk at the second Heidelberg Laureate Forum: I believe there is, in mathematics, in contrast to the experimental disciplines, a character which is nearer to that of free creative art. There is evidence that the relation of artistic beauty and mathematical beauty is more than an analogy. […]
12:09 AM | When does fall really start?
This year the autumnal equinox – which marks the point when the sun crosses the celestial equator – falls on September 22 in the United States (10:29 PM Eastern time, and earlier for the other time zones.) People seem to refer to this as the “first day of fall”. But this is the astronomical definition. […]

September 21, 2014

10:38 PM | Il più grande robot del mondo
Oltre ai problemi di pubblicazione, la gestazione del post è stata sicuramente la più complessa di tutta la serie dedicata ad "Astro Boy". Il post che segue ha subito almeno un paio di riscritture a partire da un testo di base iniziale, che vi posso assicurare alla fine è risultato completamente stravolto. La versione alla fine pubblicata non mi ha comunque soddisfatto appieno, ma se avessi continuato a limare, probabilmente non avrebbe visto mai la luce e non avevo altre […]
10:14 PM | new kids on the block
This summer, for the first time, I took three Dauphine undergraduate students into research projects thinking they had had enough R training (with me!) and several stats classes to undertake such projects. In all cases, the concept was pre-defined and “all they had to do” was running a massive flow of simulations in R (or […]
5:22 PM | Idiosyncratic Thinking: a computer heuristics lecture #Feynman Richard Feynman, Winner of the 1965 Nobel Prize in Physics, gives us an insightful lecture about computer heuristics: how computers work, how they file information, how they handle data, how they use their information in allocated processing in a finite amount of time to solve problems and how they actually compute values of interest to human beings. These topics are essential in the study of what processes reduce the amount of work done in solving a particular […]
4:41 PM | KaTeX is a (partial) alternative to (some of) MathJax
Khan Academy has released a new library to typeset mathematical notation on webpages, called KaTeX. “But we already have MathJax!” you say, perhaps a little too enthusiastically. Well, Khan Academy has a lot of pages about maths, and they have a fairly rare set of requirements: the maths they use is relatively simple, they usually have a... Read more »
4:38 PM | A Packing Pessimization Problem
What convex centrally symmetric shape is worst at tiling the plane with high density?
1:31 PM | I can’t think of a good title for this one.
Andrew Lee writes: I recently read in the MIT Technology Review about some researchers claiming to remove “bias” from the wisdom of crowds by focusing on those more “confident” in their views. I [Lee] was puzzled by this result/claim because I always thought that people who (1) are more willing to reassess their priors and […] The post I can’t think of a good title for this one. appeared first on Statistical Modeling, Causal Inference, and Social Science.
12:18 PM | snapshot from Vienna
Filed under: pictures, Running, Travel Tagged: Austria, Hasburg dynasty, Hofburg, Vienna
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