Linkage

I continue to find it ironic that the best way I can find to index my posts on Google+, a social network platform launched in 2011 by a major search engine company, and to make it possible for me to search for and find the old posts, is to copy them onto a much older social network platform from 1999 that, except for the Russians, has now mostly fallen into disuse.

• Ben Schneiderman's treemap art

• Eva Hild, ceramic artist whose works look like minimal surfaces

• Symmetric unfolding of the polytope formed by removing one vertex from a 4-cube (G+)

• Auto-resizing origami flowerpot

• Is it moral to zero-rate Wikipedia in third-world countries?

• Some tips to encourage more egalitarian contributions in discussion-based classes

• Linear probing, now a good article on Wikipedia

• Hexagonal structures in nature (G+)

• Portrait of the scientist as an infant (shadowplay GIF no longer online)

• Fake university exposes visa fraud (G+; discussion involves the "true" purpose of degree programs)

• Do open peer-review systems play into sexism? (G+; and if you think they might, be sure to contribute to the arXiv user survey before it closes on April 26)

• Andrew Gleason, a mathematician who made contributions to Lie group theory, quantum mechanics, Ramsey theory, coding theory, cryptanalysis, and calculus reform, among others (G+)

• Teen hackers in the early 1980s (G+)

• The degree-6 surface with the maximum possible number of nodes (65 of them). But for higher degrees the maximum number is still unknown (G+)

• 3d model of an imagined city, made entirely out of paper by Katsumi Hayakawa

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