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Posts

September 19, 2014

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12:30 PM | 9/19/14
9 * 1 / 9 = 1^4 Also: 9 + 1 - 9 = 1^4 Also: √9 + 1 = 9 - 1 - 4 Also: 9 = 1 + √9 + 1 + 4
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11:15 AM | Whether 'tis Nobler To Get a Prize... or Not
Well, sadly (…or, maybe not) for the third year in a row there was no Ig Nobel Prize given out for pure mathematics last evening at Harvard's annual gala awards ceremony. Last year there was at least an Ig Nobel for "Probability" work, granted for this piece of Scottish research on cows:http://www.appliedanimalbehaviour.com/article/S0168-1591%2810%2900054-7/abstract?cc=yThe Ig Nobel citation says the paper makes "two related discoveries: First, that the longer a cow has been lying down, the […]
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11:14 AM | How to write better comments?
There are more articles about how to write great blog posts than the same on commenting etiquette. Here I have tried to summarize all my blogging and social commenting experiences as a single blog post. In a four years long blogging life, there were several… Read more Visit the original post How to write better comments? for the best experience of reading!
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8:21 AM | Balancing Act Puzzle
Source: Australian Mathematical Society Gazette Puzzle Corner 35 Problem:There are some weights on the two sides of a balance scale. The mass of each weight is an integer number of grams, but no two weights on the same side of the scale share the same mass. At the moment, the scale is perfectly balanced, with each side weighing a totalof W grams. Suppose W is less than the number of weights on the left multiplied by the number of weights on the right.Is it always true that we can remove some, […]
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5:00 AM | (x, why?) Mini: Fun With Tetrominoes
(Click on the comic if you can't see the full image.) (C)Copyright 2014, C. Burke.Decline to recline? The Tetromino's "no"'s. For more whimsical pondering on these fab four-square puzzle pieces, check out my recent column How Many Colored Tetrominoes?.

September 18, 2014

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11:03 PM | McDonalds Math
No summary available for this post.
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12:30 PM | 9/18/14
(9 - 1) / 8 = 1^4 Also: √9 + 1 = 8 - (1 * 4) Also: 9 + 1 - 8 = 1 * √4
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11:20 AM | http://1001mathproblems.blogspot.com/2014/09/blog-post_18.html
No summary available for this post.
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5:00 AM | (x, why?) Mini: On a Plane!
(Click on the comic if you can't see the full image.) (C)Copyright 2014, C. Burke.Or maybe get Dierks on a plane? Don't try this at home, especially if the plane isn't level.

September 17, 2014

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11:55 PM | turnit-off-and-onagain: Why can we never learn the interesting...
turnit-off-and-onagain: Why can we never learn the interesting side of maths
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11:00 PM | Poundstone on People and Predictions
"Rock Breaks Scissors"  by William Poundstone I keep seeing William Poundstone's latest book, "Rock Breaks Scissors" in the 'business' sections of bookstores… which I think is ashamed, because a lot of readers who would enjoy it may miss it there. More appropriately, and like most Poundstone books, it should be in a science/math area, or perhaps under psychology. Poundstone is one of my
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6:51 PM | Decimal/Binary Conversion of Integers in App Inventor
To complete my exploration of numbers in App Inventor, I’ve written an app that converts integers between decimal and binary. It uses the standard algorithms, which I’ve just translated into blocks. Overview of Base Conversion For our purposes, we will be converting between strings in different bases. For example, if the user types in a [...]By Rick Regan (Copyright © 2014 Exploring Binary)Decimal/Binary Conversion of Integers in App Inventor
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6:28 PM | Surreal: 0.999… Repeating Is Not Equal To 1 [Video]
The surreal numbers are an alternate number system that contain the real numbers. There are some weird numbers, and you can actually define a number like 0.999… repeating that is not equal to 1. The video is about 8 minutes. The first half is to explain how to construct the real numbers, which is necessary […]
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2:30 PM | 5 Math Pitfalls for Journalists
  Whether the story originates from a study or a few well placed numbers would help drive home a salient point, math is as much a part of modern journalism as a catchy lede or the perfect source. But even with great math skills, journalists are in danger of falling into several traps — and unintentionally […]
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1:25 PM | App Inventor Computes With Big Integers
I recently wrote that App Inventor represents its numbers in floating-point. I’ve since discovered something curious about integers. When typed into math blocks, they are represented in floating-point; but when generated through calculations, they are represented as arbitrary-precision integers — big integers. These blocks compute 2234112: They give this 376-digit answer: The answer is correct, [...]By Rick Regan (Copyright © 2014 Exploring Binary)App Inventor Computes With […]
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12:30 PM | 9/17/14
√9 = 17 - 14 Also: 9 = (1 * 7) + (1 * √4) Also: |√9 + 1 - 7| = |1 - 4|
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10:30 AM | The Mathematical MacArthurs
The 21 MacArthur Fellows for 2014 have been announced:http://www.macfound.org/fellows/class/class-2014/  http://tinyurl.com/mdg4csr  (NPR coverage)As usual quite a motley group, but including at least three with mathematical connections:Danelle Bassett is a physicist, using mathematics to study the complex networking of the brain.Yitang Zhang, the suddenly-famous mathematician who showed there were finite bounds to the prime gap problem.and Jacob Lurie, a 36-year-old Harvard pure […]
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5:00 AM | Shakespearean Inequalities
(Click on the comic if you can't see the full image.) (C)Copyright 2014, C. Burke.I'd estimate it as Horatio of 2 to 1.
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4:02 AM | Test your counting skills with Branifyd game for Android
Without basic operations of counting, like Addition, Subtraction, Multiplication and Division, it is not possible to imagine math problems. Counting is also the base of human life. A student, whether he’s a math major or not, must be good at counting numbers.  The counting ability… Read more Visit the original post Test your counting skills with Branifyd game for Android for the best experience of reading!
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4:00 AM | The Starbucks Experience, in Graphs
47% of American fiction is now written in Starbucks. Including this statistic. Continue reading →
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1:35 AM | twocubes: So here it is. These are the primes of ℤ[√-1],...
twocubes: So here it is. These are the primes of ℤ[√-1], ℤ[√-2], ℤ[(1+√-3)/2], ℤ[√-5], ℤ[√-6], and ℤ[(1+√-7)/2], all in one picture (at the top) and individually (in that order, below.) The reason these rings are interesting is that each of them consists of solutions to quadratic equations x²+bx+c=0 where b and c are integers and b²-4c is some square times -1, -2, -3, -5, -6, or -7, respectively. (thx ebering for the idea)

September 16, 2014

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8:31 PM | Close enough?
No summary available for this post.
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4:30 PM | A Threshold Reached...
Interesting little story of how "network theory" (via social media) underlied the solution to a 13-year-old mystery photograph from the 9/11 tragedy:http://tinyurl.com/luhnov8a blurb:"...when information moves through a social network, it doesn’t move at random: The information pings from one 'node,' or person, to another, and the relationships between all those thousands of nodes create an intricate geography of influence and power"...."...there’s a reason the photo went viral this […]
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3:39 PM | Math in SPACE: Planetary Orbits
Math is used in everything you see, including space. This presentation is about how mathematics were used in Kepler's Laws on Planetary Motion, plus how Gauss used those laws to determine the orbit of Ceres. This was made for The Cincinnati Observatory's annual ScopeOut event. Facebook Comments [...]
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12:30 PM | 9/16/14
9 + 1 = (6 * 1) + 4 Also: 9 - 1 - 6 = 1 * √4 Also: 91 (mod 6) = 1^4 Also: |√9 + 1 - 6| = 1 * √4
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3:00 AM | Game Theory Tuesdays: Why NFL Owners Probably Don’t Want A Team In Los Angeles
When the Rams left Los Angeles after 1994, most people felt the city would get another NFL team fairly quickly. After all, Los Angeles is the country’s second largest media market, so why wouldn’t the NFL want a team there? Well, it’s been 20 years and the city is still lacking an NFL team. The […]
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2:37 AM | Marc Chamberland, Math Fonts, and Congruent Triangles
Welcome to this week’s Math Munch! Up first, a follow up to our post about the World Cup a while back. We received an email from Marc Chamberland linking us to a nice little video (below) about World Cup Balls and their various properties. You may remember seeing Marc’s mathematical art in this post. Below […]

September 15, 2014

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11:13 PM | curiosamathematica: Repeated barycentric subdivision results in...
curiosamathematica: Repeated barycentric subdivision results in a gorgeous fractal-ish pattern.
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7:30 PM | Calculus Going Viral?… Could It Be
Forbes Magazine reports on Ohio State professor Jim Fowler taking calculus to the Web via Coursera (and getting rave reviews):http://tinyurl.com/lz2smt2And he's on YouTube, if you don't want to sign up for Coursera without getting a sampling first:https://www.youtube.com/user/kisonecathere's his intro to the course:
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3:10 PM | Edinburgh Scientist Fergus McInnes Missing [in Switzerland?]
An unusual and serious post. Fergus McInnes, 51, scientist from the School of Informatics, Edinburgh University, is missing. He boarded a flight to go to a conference in Switzerland but did not check into his hotel, attend the conference, or board his return flight. He has not been seen or heard from since. (read more) If […]
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