Dr. John Nash, the Nobel Prize-winning mathematician whose work included noncooperative game theory, has died aged 86. Known as Nash equilibrium, the theory is used in a broad range of fields, including economics, other social sciences, evolutionary biology as well as influencing computing and artificial intelligence. His work and life were turned into the film *A Beautiful Mind*, starring Russell Crowe, which won an Oscar for Best Picture in 2001, also putting focus on the stigma of mental illness. Nash's famed work in math and other fields extended beyond the game theory work that won him the Nobel Prize.

**Source: **BBC

If you were an NFL player, what would you do in between games? Live the high life? Spend more time working out? The Baltimore Ravens' John Urschel does something decidedly geekier: co-author math papers. The offensive lineman recently helped publish details of a "cascadic multigrid algorithm for computing the Fiedler vector of graph Laplacians" (no, we don't get it either), which would be impressive for any aspiring mathematician -- let alone one who spends his days crushing rivals on the football field. This isn't his first such paper, but it's notable that he's keeping up his academic pursuits even after graduating from Penn State and joining the big leagues.

**Source: **ArXiv.org

Who said that graphing calculators were dead in the smartphone era? Certainly not Texas Instruments -- if anything, it's showing that there's still plenty of life left in dedicated math machines. Its new TI-84 Plus CE is 30 percent thinner and 30 percent lighter than the regular Plus, making for a surprisingly sleek-looking way to crunch numbers. It has six times the memory, too, so you can store more color graphs and images (and, let's be honest, a fresh copy of *Drugwars* for goofing off mid-class). TI hasn't divulged pricing for the Plus CE, although its new design and advanced feature set hint that it'll be relatively costly when it arrives in the spring. Look at it this way, though: you might just be the envy of your fellow students when you take this svelte plotter out of your backpack.

**Via: **Cemetech

Getting to Mars is never going to be cheap. But a couple of mathematicians have figured out how to shave some significant bucks off the price tag. Rather than fly *to *the red planet when its orbit brings it closest, the craft will "meet" it on the way. The strategy is called ballistic capture and involves launching the ship into a Mars-like orbit, but moving slower than the planet itself. Eventually Mars will catch up and all that fuel that would have been necessary to cruise to the planet suddenly becomes dead weight. Which means there's no need to carry it, so you can have a smaller, lighter craft. All of this adds up to a significantly cheaper journey. But there is one problem -- the journey will take much, *much* longer. As is, it would take six months to get to there, using ballistic capture would add several more months. It wouldn't be great for sending humans to Mars, but it could make sending future rovers much more affordable for NASA and other agency.

**Via: **Gizmodo

**Source: **Scientific American

If WiFi can track a heartbeat through walls, why can't I get internet in my corner bathroom? Jason Cole was trying to figure that out too, but unlike me, he's a PhD student in physics. So he mapped his own apartment and assigned refraction values to the walls (shown above), then applied so-called Helmholtz equations to model the electromagnetic waves. As detailed in his (math-drenched) blog, the best spot for his router was where you'd expect: directly in the center. Since that was out of the question, he was still able to get "tendrils" of internet by placing it in the corner of the apartment. His experiment implies that even in a distant room you could eke some connectivity by judiciously shifting around your laptop. Some commenters want him to turn his equations into a WiFi mapping web service -- unfortunately, he thinks the idea is "unfeasible" due to the processing time and assumptions made.

**Via: **Ars Technica

**Source: **Jason Cole

D-Wave has long wanted to show that its quantum computing technology is the real deal, and it may have just come closer to proving its case. The company now says that its computer has calculated Ramsey numbers, or solutions to optimization-based math problems that are sometimes difficult to find using traditional systems. The computation represented one of the biggest-ever implementations of an algorithm, according to researchers. However, the feat isn't necessarily proof of quantum computing at work. As *Wired* explains, we've seen all of these numbers in previous experiments; the challenge wasn't difficult enough to require the involvement of a quantum computer. However, D-Wave may have better evidence in the future. Its third-generation system, due in 2015, should have enough power to find Ramsay numbers that are theoretically impossible to calculate today.

**Via: **Wired

**Source: **Physical Review Letters

Development has progressed on the game as well, with a beta expected to begin sometime before the end of 2012. Prospective players can experience the game on mobile devices and browsers to minimize barriers to entry. If you're interested in a game focused on the technical side of space travel and exploring to the boundary of our solar system, keep a close watch for news on the upcoming beta.

[Source: Project Whitecard Studios Inc. press release] ]]>

*Alt-week peels back the covers on some of the more curious sci-tech stories from the last seven days.*

It's a beautiful world we live in. And, while the sweet and romantic part is debatable, strange and fantastic is not. Our universe is one populated by non-planetary celestial bodies with their own non-planetary satellites, high school social hierarchies based on predictable mathematical formulas and military-funded "gut-on-a-chips." It's a weird place filled with weird stories, and we just can't get enough of it. So, what has the last seven days brought us from the fringes of science and tech? Keep reading after the break to find out. This is alt-week.

]]>"In contrast to the way that (STEM) is currently taught in secondary schools –- which often results in students becoming disengaged and disinterested in the subjects at an early age –- educational games like the one to be developed give students the chance to explore STEM topics in a way that deepens their knowledge while also developing 21st-century skills," the release says.

The title is being developed in collaboration with Filament Games, and MIT's Eric Klopfer says that it will be a powerful educational tool. "This genre of games is uniquely suited to teaching the nature of science inquiry," he explains, "because they provide collaborative, self-directed learning situations. Players take on the roles of scientists, engineers and mathematicians to explore and explain a robust virtual world." The project is being financed by a $3 million grant from the Bill & Melinda Gates Foundation. ]]>

Well, Google's gone an done it, turning the Internet into one giant graphing calculator. The software behemoth has brought graphing capabilities to search, letting users input a mathematical function into the engine -- or multiple functions, separated by commas. And, this being Google, users can explore the graphs more closely by zooming in and out and panning across. According to the company, it "covers an extensive range of single variable functions including trigonometric, exponential, logarithmic and their compositions." If you know what all of that means, we're guessing you're pretty psyched about this news.

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"I'm originally a developer," says Project Whitecard CEO Khal Shariff. "I thought, 'oh, I could be a developer for the rest of my life, or I could start my own company.'" That company has some pretty lofty goals for its first MMO, including reaching out to millions of kids worldwide and getting them interested in STEM education (science, technology, engineering, and mathematics).

"We are dedicated to using game technology to do things that, when somebody interacts with the game, it maybe leaves the world better or leaves somebody smarter," Shariff says. ]]>

A computer solving a Rubik's cube? P'shaw. Doing it in 10.69 seconds? Been there, record set. But to crack one of any size? Color us impressed. Erik Demaine of MIT claims to have done just that -- he and his team developed an algorithm that applies to cubes no matter how ambitious their dimensions. Pretty early on, he realized he needed to take a different angle than he would with a standard 3 x 3 x 3 puzzle, which other scientists have tackled by borrowing computers from Google to consider all 43 quintillion possible moves -- a strategy known simply as "brute force." As you can imagine, that's not exactly a viable solution when you're wrestling with an 11 x 11 x 11 cube. So Demaine and his fellow researchers settled on an approach that's actually a riff on one commonly used by Rubik's enthusiasts, who might attempt to move a square into its desired position while leaving the rest of the cube as unchanged as possible. That's a tedious way to go, of course, so instead the team grouped several cubies that all needed to go in the same direction, a tactic that reduced the number of moves by a factor of log *n*, with *n *representing the length of any of the cube's sides. Since moving individual cubies into an ideal spot requires a number of moves equal to *n*², the final algorithm is *n*²/log *n*. If we just lost you non-math majors with that formula, rest assured that the scientists expect folks won't be able to apply it directly, per se, though they *do *say it could help cube-solvers sharpen their strategy. Other that, all you overachievers out there, you're still on your own with that 20 x 20 x 20.

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Here's how it works. For every crossword line on the board, you're given a set of math equations with the numbers missing. There's one total number for every puzzle (say, 6), and then for each equation, you need to figure out how another set of numbers fits in to complete the clue and make the equation equal to the total number. In other words, given the clue

It's fiendishly clever, and it really puts your brain to work, especially if (like me) you're not that great at casual math. But there are a ton of puzzles to work through, and then you can even buy a puzzle pack via in-app purchase for more. Especially at the current price of free, Quaso is a mathematical brain teaser that you shouldn't miss. ]]>

We've been getting a generous look under the hood of

Urbanek explains, in detail, how the team set up values for stats and durability with some baseline assumptions. They knew what they could expect for an "average" player to do in terms of damage-per-second at high levels, and they had some idea of how long they wanted each fight to last (the time cited is twenty seconds). From there, the diary goes into the balancing and scaling factors needed to ensure that players and enemies both are dealing reasonable damage and surviving for the preferrable amount of time. If you like numbers and systems, or just a clearer picture of how