Rob Eby math dude
@RobEbymathdude
Full time dad, full time math geek, part time homebrewer. Retweets do not imply endorsement. My views are my own.
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The more I teach, and the more I play music, the more I think the role of the professor is primarily to teach students how to become experts at practicing.
Sorry for not knowing who shared this (or came up with this) originally, but it is a nice little puzzle for algebra students.
The Joy of Why podcast, which I cohost with Janna Levin, is coming back soon. Here's a preview of season 4. Hope you'll join us! podcasts.apple.com/us/podcast/the… @QuantaMagazine
Been trying to understand the inscribed square problem. Here is that journey. Let's start with a closed loop that forms a cow and instead of a square, try to form a rectangle. If the diagonals have the same midpoint and length, then we have a rectangle. (1/n)
New* video! If you’ve ever wondered what topology is, this problem is one of the best examples I know of to give an authentic sense of what it’s all about: youtu.be/IQqtsm-bBRU
A cubic whose roots are a pair of complex conjugates, and one real. As you move the real root, what do you notice? As you move the complex root, what do you notice?
Wow, fractals with sine are beautiful. Graph Link: desmos.com/calculator/xvj… insπred by x.com/JohnDCook/stat…
Just published my latest newsletter, discussing five blog posts about iterated sines and cosines. The fractal image below by Mike Croucher is discussed in one of the posts.
The same people who’ve spent the last several years decrying “unqualified DEI hires” are now shoehorning through Cabinet nominations who can’t even pass a basic background test.
Here's a fun little "magic trick." Can you figure out how it works? Hint: even and odd numbers. I was thinking you could roll a die to determine how much to count each time. (I saw the trick was credited to Martin Gardner—true? Source?) youtube.com/watch?v=DaWcL3…
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How Predictable Are You?
If you're interested in AI, machine learning, data science, and black box models, you might enjoy my chat with @Stanford statistician Emmanuel Candès.
There’s a lot that most people — even people involved in polling — don’t quite get about statistical predictions. Tune in to this week’s episode of “The Joy of Why” to learn about ballot boxes, black boxes, and how statisticians make the most of limited information.…
Some of you will know William Dunham as the marvelous writer of math history books like "Journey through Genius". Here he gives a very entertaining lecture about the math matriculation exams at Bryn Mawr (an academically rigorous women's college) in the old days.…
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