Which side are you on?

Comments

• lelgenio@lemmy.ml ⁨4⁩ ⁨months⁩ ago

  Get rotated, idiot.

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  • wisha@lemmy.ml ⁨4⁩ ⁨months⁩ ago

    I just downvoted your comment.

    FAQ

    What does this mean?

    The amount of points on your comment will be decreased by one. The deduction will be federated across thousands of Lemmy instances, bringing you shame from across the Fediverse.

    Why did you do this?

    There are several reasons I may deem a comment to be unworthy of positive or neutral points. These include, but are not limited to:

    • Rudeness towards other users,
    • Spreading incorrect information,
    • Sarcasm not correctly flagged with a /s.

    As this is your first time receiving my downvote, I will provide reasons (listed below) to help you avoid making these mistakes again. Note that this will not be the case with future downvotes.

    • Writing variables next to each other to form words. “Y o u” is not an English word. If you want the English word “You” in LaTeX math mode, write \text{You}.
    • Your “rotation matrix” has determinant of -1, meaning it is not a rotation matrix. Propaganda promoting improper rotations will not be torolated on mander.xyz.

    Am I banned from the Lemmy?

    No - not yet. But you should refrain from making comments like this in the future. Otherwise I will be forced to issue an additional downvote, which may put your commenting and posting privileges in jeopardy.

    I don’t believe my comment deserved a downvote. Can you un-downvote it?

    Sure, mistakes happen. But only in exceedingly rare circumstances will I undo a downvote. If you would like to issue an appeal, shoot me a private message explaining what I got wrong. I tend to respond to PMs within several minutes. Do note, however, that over 99.9% of downvote appeals are rejected, and yours is likely no exception.

    How can I prevent this from happening in the future?

    Accept the downvote and move on. But learn from this mistake: your behavior will not be tolerated on mander.xyz or the Fediverse as a whole. I will continue to issue downvotes until you improve your conduct. Remember: Posting is privilege, not a right.

    source

    • wisha@lemmy.ml ⁨4⁩ ⁨months⁩ ago

      I didn’t actually downvoted your comment but apprently someone did and now I look like an asshole 😢.

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      • -> View More Comments
• NeatNit@discuss.tchncs.de ⁨4⁩ ⁨months⁩ ago

  \cdot all the way (except e.g. cross-product for vectors, I’m not an anarchist)

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  • RubberElectrons@lemmy.world ⁨4⁩ ⁨months⁩ ago

    Same same, cdot is nice and clear

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• rescue_toaster@lemm.ee ⁨4⁩ ⁨months⁩ ago

  As someone that grades undergraduates, I’m happy that they not use the letter “x” to imply multiplication.

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  • credo@lemmy.world ⁨4⁩ ⁨months⁩ ago

    I don’t understand why we teach that to children, just to turn around and tell them not to do it a few years later.

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    • davidgro@lemmy.world ⁨4⁩ ⁨months⁩ ago

      I suppose kids aren’t great at centering a dot. But they could draw a six pointed * as easily as an x, it’s one more line.

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• tate@lemmy.sdf.org ⁨4⁩ ⁨months⁩ ago

  I need 'em both. Not everything I multiply is a number.

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  • anothercatgirl@lemmy.blahaj.zone ⁨4⁩ ⁨months⁩ ago

    dot product vs cross product

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• IAmVeraGoodAtThis@lemmy.blahaj.zone ⁨4⁩ ⁨months⁩ ago

  (1)(3)(5)

  Fight me

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• anothercatgirl@lemmy.blahaj.zone ⁨4⁩ ⁨months⁩ ago

  I use asterisk.

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  • tate@lemmy.sdf.org ⁨4⁩ ⁨months⁩ ago

    In LaTeX? You really are a rebel.

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• AeonFelis@lemmy.world ⁨4⁩ ⁨months⁩ ago

  \cdot master race. \times users should just use Microsoft Word (unless it’s for a Cartesian product or for cross product, of course)

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• Kruemel@feddit.de ⁨4⁩ ⁨months⁩ ago

  times is for cartesian product, cdot if i’m feeling it

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• the_beber@lemm.ee ⁨4⁩ ⁨months⁩ ago

  \cdot for matrix multiplication and the dot product, \times for cross product and nothing (or *, if I want to write it explicitly) for regular multiplication.

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  • MBM@lemmings.world ⁨4⁩ ⁨months⁩ ago

    or *, if I want to write it explicitly and have no convolution in the expression

    But why

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    • thatsTheCatch@lemmy.nz ⁨4⁩ ⁨months⁩ ago

      • is commonly used for multiplication in computer programming, so it’s probably that. Also in your calculator app

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  • NegativeInf@lemmy.world ⁨4⁩ ⁨months⁩ ago

    ** for power?

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    • the_beber@lemm.ee ⁨4⁩ ⁨months⁩ ago

      ^ for power. ** is usually in a programming setting (but it‘s usually a method and not an operator there.)

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  • thisfro@slrpnk.net ⁨4⁩ ⁨months⁩ ago

    This is the way

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• ofcourse@lemmy.ml ⁨4⁩ ⁨months⁩ ago

  • \cdot for variables, e.g., x \cdot y
  • \times for numbers, e.g., 2 \times 8
  • nothing for combination, e.g., 2x

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• Ziglin@lemmy.world ⁨4⁩ ⁨months⁩ ago

  I use \times and redefine it as \cdot

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• ricdeh@lemmy.world ⁨4⁩ ⁨months⁩ ago

  People using the cross for scalar multiplication are insane

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• 10_0@lemmy.ml ⁨4⁩ ⁨months⁩ ago

  Or both when its appropiate

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• TheyCallMeHacked@discuss.tchncs.de ⁨4⁩ ⁨months⁩ ago

  How about nothing at all

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• GravitySpoiled@lemmy.ml ⁨4⁩ ⁨months⁩ ago

  cdot is within matrices and times is used for a m \times n matrix

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• Poach@lemmy.world ⁨4⁩ ⁨months⁩ ago

  (

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• SkybreakerEngineer@lemmy.world ⁨4⁩ ⁨months⁩ ago

  Depends on whether I want a scalar or vector, sine or cosine

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• Lemmygradwontallowme@hexbear.net ⁨4⁩ ⁨months⁩ ago

  Aye, why not an asterisk / * ?

  It’s also good for multiplying, innit?

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• r@piefed.social ⁨4⁩ ⁨months⁩ ago

  \cdot for vector products, \times for multiplying plain numbers, whatever i feel like for anything else

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  • dirkgentle@lemmy.ca ⁨4⁩ ⁨months⁩ ago

    Vector dot products go with dot, cross with times.

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    • r@piefed.social ⁨4⁩ ⁨months⁩ ago

      yeah i accidentally left that out

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• vaderaj@lemmy.world ⁨4⁩ ⁨months⁩ ago

  Cries in Linear Algebra

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• AtHeartEngineer@lemmy.world ⁨4⁩ ⁨months⁩ ago

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