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Frequency of word-use predicts rates of lexical evolution throughout Indo-European history
Greek speakers say "´‘oura", Germans "schwanz" and the French "queue" to describe what English speakers call a 'tail', but all of these languages use a related form of 'two' to describ...
article, evolution, language, maths, pdf saved by: davidar more details ...
http://www3.isrl.uiuc.edu/~junwang4/langev/localcopy/pdf/pagel07wordFrequencyNATURE.pdf
Quantifying the evolutionary dynamics of language
Human language is based on grammatical rules1, 2, 3, 4. Cultural evolution allows these rules to change over time5. Rules compete with each other: as new rules rise to prominence, old one...
article, evolution, language, maths, pdf saved by: davidar more details ...
http://www.ped.fas.harvard.edu/people/faculty/publications_nowak/Nature07.pdf
Mathematical Art
art, fractal, list, maths saved by: davidar more details ...
http://www.artpromote.com/mathematical.shtml
Bathsheba Sculpture
Welcome. I'm an artist exploring how math, science and sculpture meet, and this is my gallery and storefront. My work is about life in three dimensions, symmetry and balance, and always ...
art, fractal, maths, sculpture saved by: davidar more details ...
http://www.bathsheba.com
Fractal poster, 130 megapixels, Fractal 01, Mandelbrot fractals
We employed a modern PC many days to compute a fractal picture with an absolute incredible resolution of more than 3 gigapixels (these are 3000 megapixels). Since no program can handle su...
fractal, graphics, image, maths saved by: davidar more details ...
http://www.fractalizer.de/en/mega.htm
Roulette (curve) - Wikipedia, the free encyclopedia
In the differential geometry of curves, a roulette is a kind of curve, generalizing cycloids, epicycloids, hypocycloids, and involutes. Roughly speaking, it is the curve described by a po...
maths saved by: davidar more details ...
http://en.wikipedia.org/wiki/Roulette_(curve)
Limaçon -- from Wolfram MathWorld
The limaçon is a polar curve of the form r=b+acostheta (1) also called the limaçon of Pascal. It was first investigated by Dürer, who gave a method for drawing it in Underweysung de...
maths saved by: davidar more details ...
http://mathworld.wolfram.com/Limacon.html
Machine prose
Given a piece of text in any language, the program called ADIOS - automatic distillation of structure - searches for patterns and structures which it then generalises to produce new and m...
language, maths saved by: davidar more details ...
http://plus.maths.org/latestnews/may-aug05/adios
Speechless maths
Here you are, reading an article in a magazine about mathematics. This shows that know how to read and that you are interested in maths. But could you still do maths even if you could not...
language, maths saved by: davidar more details ...
http://plus.maths.org/latestnews/jan-apr05/speechless
The mystery of Zipf
In our recent Plus article Tasty maths, we introduced Zipf's law. Zipf's law arose out of an analysis of language by linguist George Kingsley Zipf, who theorised that given a large body o...
language, maths saved by: davidar more details ...
http://plus.maths.org/latestnews/may-aug08/Zipf
Evolutionary maths
What is it that makes the human mind so unique and us humans so different from the other species we share this planet with? One thing that is universally present throughout human cultures...
language, maths saved by: davidar more details ...
http://plus.maths.org/issue44/features/varley
Derivation of E = mc2
Over the years that Karl's Calculus Tutor has been on line, I have received a number of emails requesting that I show from first principles how you get Einstein's famous formula, E = mc2...
maths, pdf, physics, proof saved by: davidar more details ...
http://www.karlscalculus.org/pdf/einstein.pdf
Modeling Titration Curves
Titration is a procedure used by chemists to determine the concentrations of dissolved chemical species. Chemistry teachers often use titrations to teach about acid/base behavior. The che...
calculator, chemistry, download, maths saved by: davidar more details ...
http://crippen.nevada.edu/calculators/activities/titrate.html
pH of any acid/base solution
chemistry, maths saved by: davidar more details ...
http://www.chembuddy.com/?left=pH-calculation&right=pH-acid-base-solution
Acid-Base Titration Curves
The most important characteristics of a neutralization titration can be summarized in the titration curve (usually pH as a function of volume Vtitr of the titrant). The titration curve ca...
applet, chemistry, java, maths saved by: davidar more details ...
http://www.chem.uoa.gr/applets/AppletTitration/Appl_Titration2.html
The Backpropagation Algorithm
mathematical description of the backpropagation algorithm
maths, neural-networks saved by: davidar more details ...
http://www.speech.sri.com/people/anand/771/html/node37.html
Biot–Savart law - Wikipedia, the free encyclopedia
The Biot–Savart Law is an equation in electromagnetism that describes the magnetic field B generated by an electric current. The vector field B depends on the magnitude, direction, leng...
maths, physics saved by: davidar more details ...
http://en.wikipedia.org/wiki/Biot-Savart_Law
Avoid eqnarray!
Whenever the eqnarray environment appears in a question or an example of a problem on comp.text.tex or the TEXhax mailing list there is a large chance that someone will tell the poster no...
latex, maths saved by: davidar more details ...
http://www.tug.org/pracjourn/2006-4/madsen/madsen.pdf
derivation of solid sphere moment of inertia
maths, physics saved by: davidar more details ...
http://www.physicsforums.com/showthread.php?t=54081
Rotational Inertia
how to prove / derivate moments of inertia for simple objects (e.g. a disc)
maths, physics saved by: davidar more details ...
http://hypertextbook.com/physics/mechanics/rotational-inertia
Precession of Top
This process involves a considerable number of physical and mathematical concepts. The angular momentum of the spinning top is given by its moment of inertia times its spin speed but this...
maths, physics saved by: davidar more details ...
http://hyperphysics.phy-astr.gsu.edu/hbase/top.html
Python inside LaTeX
"With this style file for LaTeX it is possible to write Python code inside a LaTeX document. It can be extremely useful for generating figures and similar things." And in fact, Martin wa...
code, download, latex, maths, opensource, python saved by: davidar more details ...
http://thewikiblog.appspot.com/blog/python-inside-latex
Nontransitive dice - Wikipedia, the free encyclopedia
A set of nontransitive dice is a set of dice for which the relation "is more likely to roll a higher number" is not transitive. See also intransitivity. This situation is similar to that...
interest, maths saved by: davidar more details ...
http://en.wikipedia.org/wiki/Nontransitive_dice
Integration by Partial Fractions
example, maths, tutorials saved by: davidar more details ...
http://www.math.ucdavis.edu/~kouba/CalcTwoDIRECTORY/partialfracdirectory/PartialFrac.html
How to Read Mathematics
education, educational, howto, lifehacks, math, mathematics, maths, reading, science saved by: deusdiabolus and 2 people more details ...
http://www.stonehill.edu/compsci/History_Math/math-read.htm
Abramowitz and Stegun: Handbook of Mathematical Functions
Scanned version of "Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables" by Milton Abramowitz and Irene A. Stegun. As a work of the US government, it is in t...
download, free, maths saved by: davidar more details ...
http://www.math.sfu.ca/~cbm/aands
Roulette -- from Wolfram MathWorld
A particularly interesting case of a roulette is a regular n-gon rolling on a "road" composed of a sequence of truncated catenaries, as illustrated above. This motion is smooth in the sen...
interest, maths saved by: davidar more details ...
http://mathworld.wolfram.com/Roulette.html
jsMath
render TeX-style maths in html documents
javascript, latex, library, maths, opensource, webdesign saved by: davidar more details ...
http://www.math.union.edu/locate/jsMath
maths online function plotter
calculator, equation, graph, maths, plotter, tools saved by: hotfigs more details ...
http://www.univie.ac.at/future.media/moe/fplotter/fplotter.html
An Inequality: 1/2*3/4*5/6* ... 99/100 < 1/10
maths, proof saved by: davidar more details ...
http://www.cut-the-knot.org/proofs/inequality.shtml
Wallis product - Wikipedia, the free encyclopedia
pi expressed as a product
formulae, maths, proof saved by: davidar more details ...
http://en.wikipedia.org/wiki/Wallis_product
History of Matrices and determinants
history, maths saved by: davidar more details ...
http://www-history.mcs.st-andrews.ac.uk/history/HistTopics/Matrices_and_determinants.html
Implicit function - Wikipedia, the free encyclopedia
maths, wikipedia saved by: davidar more details ...
http://en.wikipedia.org/wiki/Implicit_function
Graph - Download
download, maths, opensource, visualization, windows saved by: davidar more details ...
http://padowan.dk/graph/Download.php
KAlgebra
kde, maths, opensource, software saved by: davidar more details ...
http://kalgebra.berlios.de
Solve equations with numberz EquationSolver
Solve equations in real variable x. Your equation may include trigonometric, hyperbolic, logarithmic, modulus and highest common factor functions. Solve simultaneous equations in real v...
javascript, maths, online, tools saved by: davidar more details ...
http://www.numberz.co.uk/ES.html
The Prime Pages (prime number research, records and resources)
Access to hundreds of pages of award-winning information on prime numbers--with links to thousands of pages elsewhere. We host the searchable database of the 5000 largest known primes...
database, download, free, maths, search saved by: davidar more details ...
http://primes.utm.edu
Famous Curves Index
equations and graphs of famous curves
graphics, index, maths saved by: davidar more details ...
http://www-history.mcs.st-andrews.ac.uk/Curves/Curves.html
Polynomial Long Division
division algorithm for polynomials
howto, maths, reference saved by: davidar more details ...
http://sosmath.com/algebra/factor/fac01/fac01.html
Principia Mathematica - Wikipedia, the free encyclopedia
The Principia Mathematica is a 3-volume work on the foundations of mathematics, written by Alfred North Whitehead and Bertrand Russell and published in 1910–1913. It is an attempt to de...
maths, wikipedia saved by: davidar more details ...
http://en.wikipedia.org/wiki/Principia_Mathematica
Saint Gasoline » Blog Archive » Asshole Mathematics
A comiblog (webcomic / blog) for intellectuals and juvenile delinquents. You don't have to be a moron to enjoy it, but it helps.
atheism, humour, maths saved by: davidar more details ...
http://saintgasoline.com/2008/02/10/asshole-mathematics
Astable Multivibrator
circuit, electricity, maths, physics saved by: davidar more details ...
http://www.visionics.ee/curriculum/Experiments/Astable/Astable Multivibrator1.html
Forces on Bridges Math Model
USING MATRICES TO SOLVE SYSTEMS OF EQUATIONS
bridges, engineering, maths saved by: davidar more details ...
http://mvhs.shodor.org/mvhsproj/bridges/bridge2.html
Approximating roots
How to calculate square, cubic, etc roots to whatever accuracy you need, with a paper and pencil / in your head
howto, maths saved by: davidar more details ...
http://www.gizmology.net/roots.htm
Greek alphabet and roman numbers
html/xml codes for Greek alphabet, Mathematical symbols, Croatian special characters, Entity names for characters
html, maths, webdesign saved by: davidar more details ...
http://www.ktf-split.hr/periodni/en/abc/gr-slova.html
Aviation Formulary V1.43
formulae for calculating great circle paths
formulae, maths, tutorials saved by: davidar more details ...
http://williams.best.vwh.net/avform.html