oliver knill
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I like this picture taken last Saturday from Allston. To the very left at the horizon is the Turkey hill, where we live (the blue water tower is close). Right: Cambridge with Harvard. Front: the new Science and Engineering complex (SEC), which is a pretty cool new part of Harvard t.co/SwfvyRxlVi
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A video t.co/ex5sPE6uhl on why Swiss trains are superb: some statistics: 98.9 connection punctuality. 91.9 train punctuality (3 minutes) A Mayor of Bogota quote: ``A developed country is not a place where the poor have cars but where the rich use public transportation." t.co/mrXW65cop1
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While we are in the history animation mood:here is a comparison of young and older Stokes. The left part had been shown at some point included in some slides during our Math S 21a course this summer, a course which is now finished. t.co/eyuC9Ds7V9 t.co/QISObIld73
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Younger and Older Gauss re-animated. The painting to the left is not so well known. It is before he slammed that answer 5050 onto the desk of his teacher Buettner. Gauss is featured nicely in the movie Measuring the world (2012). (Some clips are here: t.co/1009s2W7BZ) t.co/bFZAyqApdN
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Research gate removed the RG score: t.co/K8lPqiLgOj where criteria are explained. However silly, a score should be intuitive, transparent, robust and relevant. Actually, these are good points for any evaluation: from grades for students to voting scores in an election
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About wrong pandemic predictions t.co/lCcODCmkRj Ioannidis and collaborators had looked earlier also at social aspects of why the academically weaker (measured by quantitative value functions) side prevailed rhetorically t.co/GfL3ei1nZK
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Theorem: Every even prime is the sum of two odd numbers. t.co/1JOjZYiDyU
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"This ole guy Olli Rocky Docky" t.co/2kSgyiNvKt via @YouTube New Piano, New Drone, New song! By the way, ``the ole house" song by Stewart Hamblen motivated ``Das alte Haus von Rocky-Docky", which became a classic, and which would often be song around camp fires.
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In t.co/EaymRlGvJm there is an APL implementation (17 characters) of a function which gives all primes <= n. Here is shortest I could find so far in Mathematica: F[A_]:=Complement[A,Flatten[TensorProduct[A,A]]]; P[n_]:=F[Range[n]+1]; P[1000] (without using Prime[]).
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If all the reals were complex after all .... t.co/qUQQA2MfaW via @YouTube
