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This is part II in a series on residual life, hazard rates, and long-tailed distributions. If you haven’t read part I yet, read that first! The previous post in this series highlighted that one must be careful in connecting “heavy-tailed” with the concepts of “increasing mean residual life” and “decreasing hazard rate”. In particular, there […]

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Teen births have been dropping for years, but new data show just how far. The birth rate for teens aged 15-19 declined 57% between 1991 and 2013, to 26.6 births for every thousand teens.

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Over the last week we’ve been looking informally at symmetry. The topic came up because we were studying counting with symmetry in Art of Problem Solving’s “Introduction to Counting and Probability” book. Questions such as “how many different ways can … Continue reading →

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Optimization of Convex Functions with Random Pursuit by Sebastian U. Stich, Christian L. Müller, Bernd GärtnerWe consider unconstrained randomized optimization of convex objective functions. We analyze the Random Pursuit algorithm, which iteratively computes an approximate solution to the optimization problem by repeated optimization over a randomly chosen one-dimensional subspace. This randomized method only uses zeroth-order information about the objective function and does not
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Instead of having a whole lesson of What’s My Rule explorations, we are adding one exploration to each bellringer during our unit on Rigid Motions. From yesterday: Students move point Z and observe how W follows. Z is mapped to W according to some rule that the students are trying to determine I’ve written about […]

gaussianos tweeted: @gaussianos

Encuentra el menor - #AntologíaGaussiana http://t.co/NZjw7mVERT

2014-08-21 23:00:02

andrescaicedo tweeted: @andrescaicedo

From Tao's blog post: "By coincidence, an independent proof of this theorem has also been obtained very recently by James Maynard."

2014-08-21 22:55:54

andrescaicedo tweeted: @andrescaicedo

2014-08-21 22:53:47

andrescaicedo tweeted: @andrescaicedo

Kevin Ford, Ben Green, Sergei Konyagin, and Terence Tao. “Large gaps between consecutive prime numbers“. http://t.co/ZybuVmLV52

2014-08-21 22:53:28

DuPriestMath tweeted: @DuPriestMath

Powerful perspective on #Ferguson http://t.co/Ufk4C9eicF

2014-08-21 22:51:38

MindAfterMath tweeted: @MindAfterMath

Introduction to Python Programming http://t.co/CJ451SZ3Lk #compsci #datascience #math #stem #mathchat

2014-08-21 22:50:37

mathfour tweeted: @mathfour

2014-08-21 22:36:41

MrHonner tweeted: @MrHonner

2014-08-21 22:35:29

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