May 2012
30 posts
1 tag
“Not just in L.A. but across the U.S. we’ve neglected the simple act of walking...”
– Christopher Hawthorne (Reminded me to go back and read Tom Vanderbilt’s recent 4-part series in Slate, Why don’t Americans walk more? The crisis of pedestrianism)
May 31st
9 notes
2 tags
RIP Friedrich Hirzebruch, 1927-2012
A grad school friend's status update on facebook yesterday: Given that more than half of my papers are expanding on his famous formula, I hope it is not immodest of me to say that he was a great influence on me, even though I never met him. RIP Friedrich Hirzebruch, 1927-2012.
My comment: Hadn't heard of Hirzebruch before. What's the famous fmla?
My friend: If you've heard of the Riemann-Roch theorem (which gives the number of meromorphic functions with prescribed zeros and poles on a Riemann surface), the Hirzebruch-Riemann-Roch formula is a generalization of that to arbitrary dimensions. It is also a manifestation of the Atiyah-Singer index theorem. It has been instrumental in understanding the relationship of K-theory and singular cohomology.
Some friend of his: http://www.encyclopediaofmath.org/index.php/Riemann-Roch_theorem
Some other friend of his: I had just given up trying to find a reference which spoonfeeds me the definition of Hochschild cohomology of a dga, so I opened Facebook and then found your post. Maybe you can tell me? Half the articles I found referred to your work in one way or another. Thanks.
May 30th
5 tags
“This summer the city’s Department of Transportation inaugurates a new bike-share...”
– David Byrne in this Sunday’s NYT on the NYC’s new bike-share program: “This Is How We Ride”
May 29th
1 note
4 tags
“The democratization of literacy in the late 19th century created one of the...”
– Computer Programming for All: A New Standard of Literacy (via courtenaybird)
May 28th
232 notes
May 27th
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5 tags
May 26th
33 notes
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May 25th
1 note
6 tags
May 24th
4 tags
May 19th
7 tags
May 18th
2 notes
4 tags
May 18th
4 notes
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May 17th
289 notes
4 tags
May 17th
2 notes
7 tags
May 17th
5 tags
May 16th
1 note
4 tags
May 15th
458 notes
3 tags
May 15th
1 note
6 tags
May 14th
May 11th
264 notes
2 tags
May 11th
May 11th
May 10th
1 note
May 10th
70 notes
May 10th
May 10th
1,562 notes
May 8th
16,788 notes
4 tags
May 8th
176 notes
4 tags
May 8th
1 tag
May 7th
Man City's Victory via @tetedeviande
@CultFootball I’m embarrassed to admit I was starting to believe we might see a draw. Class finish. Toure has been great all season.Share on FacebookShare on TwitterShare on PinterestShare on Google+Share on LinkedinShare by emailJonathan S NovySun, May 06 2012 10:04:57ReplyRetweet0 likes · 0 comments @CultFootball If it stays like this, I see Utd dropping points. I wanna throw...
May 7th