Sunday, January 2, 2011





These signals are drawn from a database signals that includes event related potentials of normal people, and patients with Alzheimer's disease. Here the original signals (below) and theirs (CWT) continuous wavelet transforms (above).

The name of the game is always the same: find the differences and find the good brain.

solution: ko si elddim eht ni eloh eht htiw eno ehT

Monday, December 13, 2010

Sunday, December 5, 2010

The sacred geometry of chance, The hidden law of a probable outcome, and the numbers lead a dance

"Bayesians assign probabilities to any statement whatsoever, even when no random process is involved. Probability, for a Bayesian, is a way to represent an individual's degree of belief in a statement, or an objective degree of rational belief [..]"

Saturday, November 27, 2010

Tensors VS Tension

Tullio Levi-Civita (29 March 1873 — 29 December 1941); was an Italian mathematician, most famous for his work on absolute differential calculus (tensor calculus) and its applications to the theory of relativity.He was a pupil of Gregorio Ricci-Curbastro, the inventor of tensor calculus

In 1900 he and Ricci-Curbastro published the theory of tensors which Albert Einstein used as a resource to master the tensor calculus, a critical tool in Einstein's development of the theory of general relativity. Levi-Civita's series of papers were also discussed in his 1915–1917 correspondence with Einstein. The correspondence was initiated by Levi-Civita, as he found mathematical errors in Einstein's use of tensor calculus to explain theory of relativity. It's evident from these letters that, after numerous letters, the two men had grown to respect each other. In one of the letters, regarding Levi-Civita's new work,

Einstein wrote:

"I admire the elegance of your method of computation; it must be nice to ride through these fields upon the horse of true mathematics while the like of us have to make our way laboriously on foot".

C Cattani and M De Maria, Geniality and rigor: the Einstein – Levi-Civita correspondence (1915–1917), Riv. Stor. Sci. (2) 4 (1) (1996), 1–22; as cited in MacTutor archive..