Author Archives: JBL

Map of the world

At least as far as families of reflection groups with nice combinatorics are concerned

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“Super Sushi Ramen Express” by Michael Booth

I found this book to be lazy in a variety of ways. For example: more than one chapter amounts to little more than quoting promotional materials from a PR officer; every city visited gets a paragraph that could be ripped … Continue reading

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Ikea proofs

Overheard: He writes a lot of Ikea proofs — all the parts are there,but the reader has to assemble them, and sometimes there are a fewextra parts at the end.

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Microwaves

Ok so every microwave comes with a ten-digit touch-pad. But does anyone ever use the digits 6 through 9 for anything other than initially setting the clock? Obviously it is insane to view this as “wasteful”, but also I can’t … Continue reading

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“Magical Mathematics” by Persi Diaconis and Ron Graham

This was a gift from my wonderful friend AHM, following the death of Graham last year. I enjoyed it quite a lot, but it’s also very weird. For example, chapters bounce around dramatically in tone and content (some are about … Continue reading

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“Mathematical education” by G. St. L. Carson

This is the other book I mentioned finding at the Book Barn.  It is a collection of eight lectures delivered by the author in 1912 and 1913, and a fascinating historical document.  Some features that I found particularly interesting follow. … Continue reading

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Deaths of trees

I don’t have anything to say here except to record some articles I’ve read at some point, about deaths of trees: both individuals (a white mulberry on the National Mall and a white oak in New Jersey) and entire species … Continue reading

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P.G. Wodehouse

So I started reading a few of his novels, including the collection “What Ho!” What to say? He’s generally good for a laugh; much of the humor has a timeless aspect that stands up pretty well after decades. I would … Continue reading

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Pie

I wrote the post below in 2016, but for some reason I never published it; better late than never, I guess.  I referenced the Four and Twenty Blackbirds Pie Book more recently, too. I received several pieces of pie-making  equipment/guidance … Continue reading

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Trapezoids, and blogs

Atrios remarked on the (slow, in-progress) death of the open internet, as in blogs etc. And Jonathan’s offhand remark about his blog’s heyday is another anecdatum pointing in the same direction. Anyhow, that’s not what this post is about; it’s … Continue reading

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