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David Jao
Works at University of Waterloo
Attended Massachusetts Institute of Technology
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David Jao

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+The SageMathCloud​ in action at the PIMS CRG Workshop on Explicit Methods for Abelian Varieties (+David Roe​ presenting).
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This needs a signal boost. Relevant for anyone who cares about the past and/or future of mathematical publishing. Money quote: "most of my books are there -- help yourself." (h/t +Joe Corneli)
The world of professional publishing, of scholarly communication, is in a state of profound transformation. In some fields, for example physics and computer science, researchers have embraced this transformation and are forging new policies and better customs. In my experience, however, ...
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"This debate is not your garden-variety political crisis. It's the battle for the long-term viability of American democracy, and it's a battle that the Democrats simply must win even if it means risking default."
The shutdown is political blackmail. If Democrats give in, the GOP will keep putting the US democracy and economy at risk
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Not surprisingly, the mainstream media will never cover this angle of the story, because they themselves are wrongheadedly addicted to DRM.
Summary: The major publishers say they needed to cut an ebook deal with Apple in order to blunt the force of Amazon’s monopoly — but they themselves helped construct that monopoly by insisting on platform-specific DRM.
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This is why nobody should buy e-books, period.
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David Jao

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When a corporation scrapes web sites, the media calls it a "leak" and explicitly labels it "not a hack job."

But when B-school applicants (who by the way end up working at said corporations) do the exact same thing, it's unambiguously called a "hack": http://www.boston.com/business/globe/articles/2005/03/09/mit_says_it_wont_admit_hackers/
Twitter's leaked earnings were not a hack job, but only high-powered computer could have detected the early release of the sensitive financial data.
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It's kind of frustrating what gets considered hacking in general, especially by policy makers. Especially how it gets applied to middle and high schoolers. "You figured out your teacher's password is their first name and changed their background? You terrible hacker you!"
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David Jao

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Los Angeles Superior Court judge Rolf M. Treu has ruled that California's teacher tenure laws represent an unconstitutional violation of the California Constitution's equal protection clause guaranteeing each student equal access to education.

It's virtually impossible to find any neutral coverage of this story; the LexisNexis story below is as close as I could get. Some overtly partisan sites include:
http://studentsmatter.org/ (plaintiffs)
http://www.cta.org/ (defendants)
http://www.dailykos.com/story/2014/03/16/1284248/-Vergara-v-California-The-most-dangerous-lawsuit-you-probably-haven-t-heard-of (biased, liberal viewpoint)
http://www.breitbart.com/Breitbart-California/2014/04/29/Vergara-Case-Challenges-Teacher-Tenure (biased, conservative viewpoint)

My concern is not for public school education; that's an important battle, but a separate battle, which lies outside of my expertise. What worries me is that, simply put, this is a sneak attack against academic tenure. If teachers unions lose this round, you can be sure that David Welch and his friends will go after public universities next. And while private universities are probably immune to this particular constitutional challenge, these guys are persistent and I'm sure they'll think of something. Moreover, the institution of tenure itself would be greatly diminished if it were restricted primarily to private institutions.

Tenure isn't perfect, but it has served us educators well for over a century. I'm not willing to throw the whole system out just because it isn't 100% perfect.
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The new buildings on campus have whiteboards on all of the walls in the corridors, to facilitate scientific collaboration.
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Impressive and very creative!
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David Jao

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My phone, the Samsung Galaxy Nexus, on which I am typing this right now, just got barred from sale in the US thanks to an Apple lawsuit.

If I could, I would pose just a few questions to Apple:

1. How in the world does a Galaxy Nexus "look a lot like the iPhone"?

2. Do you really have such a total lack of confidence in the quality of your product that you need to resort to legal measures in order to compete?

Our household has four iPads, two iPods, and two iPhones. I love Apple products. But it's time to say goodbye to them. I refuse to fund innovation-snuffing patent lawsuits.
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Patent law is out of control in the United States, especially in the state of Texas, where the judiciary has decided to flaunt international norms to the detriment of basic principles of free market competition.  Unfortunately, similar trends are now appearing in Canadian jurisprudence as well. 
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Acadia National Park
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Jordan Pond House!
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Communities
14 communities
Education
  • Massachusetts Institute of Technology
    Mathematics
  • Harvard University
    Mathematics
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  • University of Waterloo
    Associate Professor, 2006 - present
    Faculty of Mathematics.
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