Skip to content
By using Twitter’s services you agree to our Cookies Use. We and our partners operate globally and use cookies, including for analytics, personalisation, and ads.
  • Home Home Home, current page.
  • About

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?

    New to Twitter?
    Sign up
avibryant's profile
Avi Bryant
Avi Bryant
Avi Bryant
@avibryant

Tweets

Avi Bryant

@avibryant

Happiest when working on Random Forests from random beaches.

Galiano Island
avibryant.com
Joined November 2006

Tweets

  • © 2018 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list


    Under 100 characters, optional

    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    1. John Myles White‏ @johnmyleswhite 7 Sep 2013

      Two things that don't commute, but get called addition in some languages: * String concatenation * Tuple concatenation Others?

      4 replies 1 retweet 1 like
    2. Rafael S Calsaverini‏ @rcalsaverini 7 Sep 2013
      Replying to @johnmyleswhite

      @johnmyleswhite Associativity isn't enough to loosely call something an addition?

      1 reply 0 retweets 0 likes
    3. John Myles White‏ @johnmyleswhite 7 Sep 2013
      Replying to @rcalsaverini

      @rcalsaverini My abstract algebra textbook suggested you should always call non-commutative operations multiplication.

      2 replies 0 retweets 1 like
    4. Paul Masurel‏ @fulmicoton 7 Sep 2013
      Replying to @johnmyleswhite

      @johnmyleswhite @rcalsaverini Ok... But is it really a source of confusion? I really like + for concatenation. :-S

      1 reply 0 retweets 0 likes
    5. John Myles White‏ @johnmyleswhite 7 Sep 2013
      Replying to @fulmicoton

      @fulmicoton @rcalsaverini I don't think it's confusing for strings, although it makes the math literature inaccessible. But for tuples...

      2 replies 0 retweets 0 likes
    6. Rafael S Calsaverini‏ @rcalsaverini 7 Sep 2013
      Replying to @johnmyleswhite

      @johnmyleswhite @fulmicoton but I see your point. It would be nice if programming notation was consistent with mathematical notation.

      1 reply 0 retweets 0 likes
    7. John Myles White‏ @johnmyleswhite 7 Sep 2013
      Replying to @rcalsaverini

      @rcalsaverini @fulmicoton That's really what I dream of. It drives me up a wall when groups have different words for the same thing.

      2 replies 0 retweets 0 likes
    8. Avi Bryant‏ @avibryant 7 Sep 2013
      Replying to @johnmyleswhite

      @johnmyleswhite @rcalsaverini @fulmicoton but are there common notations for, eg, a semigroup op vs a monoid op vs a commutative monoid etc?

      4 replies 0 retweets 0 likes
    9. John Myles White‏ @johnmyleswhite 7 Sep 2013
      Replying to @avibryant

      @avibryant @rcalsaverini @fulmicoton But many people (even the Wikipedia editors) are careful about commutative vs. non-commutative monoids.

      1 reply 0 retweets 0 likes
      Avi Bryant‏ @avibryant 7 Sep 2013
      Replying to @johnmyleswhite

      @johnmyleswhite @rcalsaverini @fulmicoton but it's not good enough to call commutative "add" and non-com "multiply"; multiplying Z commutes!

      9:21 AM - 7 Sep 2013
      3 replies 0 retweets 0 likes
        1. New conversation
        2. John Myles White‏ @johnmyleswhite 7 Sep 2013
          Replying to @avibryant

          @avibryant @rcalsaverini @fulmicoton That's true. We could get better notation. IIRC we wound up with this due to linear algebra.

          2 replies 0 retweets 0 likes
        3. Tim Hopper‏ @tdhopper 7 Sep 2013
          Replying to @johnmyleswhite

          @johnmyleswhite @avibryant The noncommutative + notation has never bothered me in the languages where I've used it (R, Python, C# at least).

          0 replies 0 retweets 0 likes
        4. End of conversation
        1. New conversation
        2. Jerry Gagelman‏ @drjerrynyc 7 Sep 2013
          Replying to @avibryant

          @avibryant @johnmyleswhite @rcalsaverini @fulmicoton eg, when I see 'ab' in an equation, I just know if it's a product, variable, etc.

          1 reply 0 retweets 0 likes
        3. John Myles White‏ @johnmyleswhite 7 Sep 2013
          Replying to @drjerrynyc

          @drjerrynyc @avibryant @rcalsaverini @fulmicoton I think this is why debatably bad notation isn't much of a problem.

          0 replies 0 retweets 0 likes
        4. End of conversation
        1. Jerry Gagelman‏ @drjerrynyc 7 Sep 2013
          Replying to @avibryant

          @avibryant @johnmyleswhite @rcalsaverini @fulmicoton the hard part of "good" math notation is that humans just handle ambiguity better.

          0 replies 0 retweets 0 likes
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo

      Loading seems to be taking a while.

      Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

        Promoted Tweet

        false

        • © 2018 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Cookies
        • Ads info