Math
Category archives for Math
The Calculus Diaries by Jennifer Ouellette
Posted by Chad Orzel on October 28, 2010 I finished Jennifer Ouellette’s new book a few weeks ago, shortly after my trip to Alabama, but it’s taken me a long time to get around to reviewing it due to a combination of too much work and being a Bad Person. There’s finally a tiny break in the storm of work, though, so here’s…
Know Your Prefixes, Baseball Edition
Posted by Chad Orzel on October 8, 2010 On the way to get SteelyKid from day care last night, I flipped on ESPN radio in the vain hope of getting a baseball score, but wound up listening to former Mets manager and freelance jackass Bobby Valentine talking about how difficult batting is, which included the statement: And the whole thing is over in…
Language Poll: The Most Threshold
Posted by Chad Orzel on September 7, 2010 Not prompted by anything specific, but something I’ve occasionally wondered about: what’s the threshold for “most”? Thus, a poll: The minimum percentage of X doing Y that you would need to feel justified saying “Most X do Y” is:survey software I know I tend to use “most” to mean something considerably more than just 51%,…
The Cromartie Conundrum, the Foreman Solution, and the Chamberlain Estimate
Posted by Chad Orzel on August 25, 2010 New York Jets cornerback Antonio Cromartie is getting mocked for a clip where he takes some time to name all his children (the clip isn’t as bad as the description makes it sound– he’s slow, but he doesn’t struggle all that badly). Cromartie claims that HBO manipulated the footage to make him look bad. Of…
Algebra and Circuit Breakers
Posted by Chad Orzel on August 16, 2010 A couple of “kids these days are bad at math” stories crossed my feed reader last week, first a New York Times blog post about remedial math, then a Cocktail Party Physics post on confusion about equals signs. The first was brought to my attention via a locked LiveJournal post taking the obligatory “Who cares…
P=???
Posted by Chad Orzel on August 9, 2010 the hot topic in mathematical sciences at the moment is the draft proof that P≠NP (warning: PDF). This is one of the biggest issues in computer science, and one of the Clay Mathematics Institute’s Millennium Problems, so a proof would be Big News in math/CS, and earn the prover a cool $1,000,000. Reaction among blogging…
Real Math Doesn’t Use Calculators
Posted by Chad Orzel on July 23, 2010 The Dean Dad is worried about remedial math: In a discussion this week with someone who spends most of her time working with students who are struggling mightily in developmental math, I heard an argument I hadn’t given much thought previously: students who have passed algebra and even pre-calc in high school frequently crash and…
Why I’d Never Make It as a Mathematician
Posted by Chad Orzel on May 17, 2010 Matt’s Sunday Function this week is a weird one, a series that is only conditionally convergent: So the sum of the infinite series, by inexorable logic, is both ln(2) and ln(2)/2. How is this possible? Of course it isn’t. The flaw in our logic is the assumption that the series has a definite sum –…
Dorky Poll: Numbers
Posted by Chad Orzel on April 7, 2010 I’m still getting things squared away after my blogging break, but as a step on the way back toward normal programming, here’s a Dorky Poll: What kind of numbers do you most like to work with? What kind of numbers do you like best?online surveys You can only choose a single answer, which I’m sure…
Southwest Airlines and the Traveling Salesman Problem
Posted by Chad Orzel on March 14, 2010 I’m en route to the March Meeting in Portland, which involves a three-hour layover in Chicago, between two flights on Southwest, my preferred airline. I’m always impressed by how much more efficient Southwest seems that the other major airlines. One weird manifestation of that efficiency is the flight plans that Southwest uses. Where most flights…
