daguti + mathematics   76

P. Leonard - Album on Imgur
This guy says that P. Leonard on YouTube has fantastic explanations of math.
mathematics  students  e-learning  learning-self-taught 
february 2016 by daguti
Mathway | Math Problem Solver
This is the website that Steve's former neighbors created. Evidently it brings in a lot of money because those guys lived in Steve's neighborhood and moved to even nicer mansions 4 years after Steve moved there.
mathematics  tools  mathematics-algebra  mathematics-geometry 
september 2015 by daguti
Why Math Might Be The Secret To School Success : NPR Ed : NPR
"There's plenty of evidence on the long-term importance of preschool. But why math? Morris says a 2013 study by Greg Duncan, at the University of California, Irvine's School of Education, showed that math knowledge at the beginning of elementary school was the single most powerful predictor determining whether a student would graduate from high school and attend college. "We think math might be sort of a lever to improve outcomes for kids longer term," Morris says."
mathematics  children  childrearing  teaching  poverty  counterintuitive 
december 2014 by daguti
PhotoMath on Vimeo
Scan a math equation, as you would a QR code, and this app will give you the results instantly.
video  mathematics  tools 
october 2014 by daguti
Triumph of the Nerds: Nate Silver Wins in 50 States
crowdsourcing, data-amalgamation = "We’ll see more about that kind of model, and less stories about individual polls, which are almost always misleading unless you aggregate them."
crowdsourcing  data-amalgamation  mathematics  data-mining  election-2012-presidential  large-systems 
november 2012 by daguti
Research Shows That the Smarter People Are, the More Susceptible They Are to Cognitive Bias : The New Yorker
Editors’ Note: The introductory paragraphs of this post appeared in similar form in an October, 2011, column by Jonah Lehrer for the Wall Street Journal. We regret the duplication of material. Here’s a simple arithmetic question: A bat and ball...
psychology-anchoring  psychology  psychology-overconfidence  mathematics  logic  intelligence-iq 
june 2012 by daguti
Shane Frederick - MIT Sloan professor develops new intelligence test - MIT Sloan School of Management News Briefs - MIT Sloan Newsroom
The explanation to why this has been stumping me all along: Reason why $0.10 and $1.00 are wrong = Because $1 is only $0.90 more than $0.10, not $1 more as required by the question. Mathematical steps listed here: http://answers.yahoo.com/question/index?qid=20090223164251AA7IyS4
psychology  mathematics  logic  intelligence-iq 
june 2012 by daguti
Terry Moore: Why is 'x' the unknown? | Video on TED.com
X is unknown because when arabic was translated to spanish, there was no sound for "sh" so they used the green "kai" which looks kind of like an x... and when that was translated to english and put into textbooks, they just replaced the kai with an x.
tedtalks  mathematics  language 
june 2012 by daguti
NOVA | Hunting the Hidden Dimension
mental-models = Laws that govern nature are also applicable in many other scenarios, including business, evolution, physics, etc.
video  mathematics  people-geoffrey-west  mental-models 
september 2011 by daguti
A game with a windfall for a knowing few - Boston.com
"Because of a quirk in the rules, when the jackpot reaches roughly $2 million and no one wins, payoffs for smaller prizes swell dramatically, which statisticians say practically assures a profit to anyone who buys at least $100,000 worth of tickets."
marketplace-gambling  statistics  mathematics  business-ideas-niche-abusing-the-law 
august 2011 by daguti
Kevin Slavin: How algorithms shape our world | Video on TED.com
artificial-intelligence = Leading up to 6:00 he talks about how the stock market is all algorithms and how we've started down the road of building things that we no longer understand how they work. Reminds me of that evolvable hardware article I read a while back.
finance  mathematics  patterns  mental-models  tedtalks  stock-exchange  video  intelligence-artificial 
july 2011 by daguti
Geoffrey West: The surprising math of cities and corporations | Video on TED.com
"All companies die"
evolvify-topics = Not 100% true, but tied to the fact that human constructions (cities, buildings, companies, etc) grow in the same predictable ways that nature does.

At 8:05, "Economies of scale" - tied to Charlie Munger's "mental models" - the fact that an elephant 1million times larger than a mouse doesn't need a million times more energy (economy of scale) FTA: "The bigger you are, the less needed per 'capita'" (at ~8:15)

VERY IMPORTANT: at 9:00, he lists 5 rules of biological life, which (I believe) are easily transposed to business and the universe at large.. especially rules b, c and d:
b) bigger u are,  less needed per capita
c) pace of life slows w/ increasing size
d) growth is sigmoidal, reaching stable size @maturity

At 15:00 (or before), discussion regarding the "built-in" collapse for companies/societies and the need for faster and faster "innovation" or "changing of gears" to avoid collapse.

people-geoffrey-west = Seen him on PBS. strting tag
video  tedtalks  creativity  mathematics  evolvify-topics  mental-models  cities  business  me-stuff  patterns  people-geoffrey-west 
july 2011 by daguti
Philosophy, Physics, Mathematics - “Dangerous Knowledge” BBC Documentary
Bios on 5 tortured mathematicians/physicists: Canton, Botlzman, Godel, Turing & ?

Originally at Google Video, but that service went dark April 29, 2011.
video  mathematics  physics 
april 2011 by daguti
Two Centuries On, a Cryptologist Cracks a Presidential Code - WSJ.com
Mr. Patterson then included in the letter an example of a message in his cipher, one that would be so difficult to decode that it would "defy the united ingenuity of the whole human race," he wrote.
history  people-thomas-jefferson  mathematics  encryption 
july 2009 by daguti
How maths killed Lehman Brothers
Yes, it is unfair! In fact, CDO is a lot riskier than bank deposits, but Lehman Brothers, like many investors, didn't seem to know that. Let's go back to our original model. The first source of error is that we have assumed that each investor has a 3% chance of defaulting. How do we know that? It must be from historical data. The problem is, there hasn't been a national drop of housing price since the great depression in the 1920s, so the chance that a borrower defaults was calculated on the basis of a good period when the housing prices surged. However, the housing market crashed in 2007. Many borrowers' properties are now worth even less than the loan they have to pay in the future, so many of them refuse to pay. To worsen the situation, 22% of these borrowers are the so-called subprime borrowers — those who had little income and had little hope of returning money. Banks were not afraid of lending money to them because even if they defaulted, the insurance would pay them back.
mathematics  statistics  money  disaster  economics 
july 2009 by daguti
At Drexel, he designs amazing mirrors | Philadelphia Inquirer | 01/12/2009
Indeed it could. Eight years and numerous calculations later, Hicks is now testing a prototype mirror - for a car, not a bike - and he is in talks with a foreign manufacturer. As with the bike mirror, the rounded surface provides a wide field of view - so wide that it eliminates the dreaded, driver-side "blind spot" - yet the subtle mathematics of his design result in little or no distortion.
inspiration  technology  science  mathematics  entrepreneurs  engineering  inventions  next-big-thing 
january 2009 by daguti
A Computational Introduction to Number Theory and Algebra
A book introducing basic concepts from computational number theory and algebra, including all the necessary mathematical background.
mathematics  books  learning 
june 2008 by daguti
Computer Random vs. True Random : See the difference in how random numbers are generated. Thank you Random.org!
scripting things using random numbers based on random functions, like PHP's "rand()" function... but I've never compared these types of functions to true random number generators.I stumbled upon Random.org which is a true random number generating service.
programming-php  programming  security  mathematics 
may 2008 by daguti
How To Analyze Data Using the Average | BetterExplained
How To Analyze Data Using the Average | BetterExplained
mathematics  statistics  howto 
april 2008 by daguti
Cosmic coincidence spotted : Nature News
The secret of the Universe is not 42, according to a new theory, but the unimaginably larger number 10122.
science  physics  nature  space  mathematics 
february 2008 by daguti
arXiv.org e-Print archive
Open access to 457,974 e-prints in Physics, Mathematics, Computer Science, Quantitative Biology and Statistics
science  mathematics  physics  reference 
january 2008 by daguti
Clinical depression | Something in the way he moves | Economist.com
Depressed people move in a mathematically different way from other people...when he looked for similar power-law curves in other areas, the one that most resembled that exhibited by the depressed turned out to be the pattern of electrical activity shown b
psychology  health  health-mental-depression  science  statistics  mathematics  research 
october 2007 by daguti
Fibonacci Forex Indicators
Fibonacci numbers are sequences of numbers where each successive number is the sum of the prior 2 numbers (i.e., 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, etc…). The Fibonacci number pattern was developed by Leonardo Fibonacci sometime around 1200
mathematics  money  business  statistics  interesting  large-systems 
october 2006 by daguti
Whatcom Online Math Center
Whatcom Online Math Center - FREE ONLINE MATH COURSES
learning  mathematics  reading  books  howto 
september 2006 by daguti
Basic Concepts of Mathematics - Basic Mathematics Preparation for Real Analysis and Abstract Algebra - The Trillia Group
I've always been interested in math. This might help us with statistics and other such stuff we will need when we start working with large systems
mathematics  education  science  Reference  books-ebooks 
july 2006 by daguti

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