\cdot all the way (except e.g. cross-product for vectors, I’m not an anarchist)
Which side are you on?
Submitted 10 months ago by FlapKap@feddit.dk to science_memes@mander.xyz
https://feddit.dk/pictrs/image/b14543e7-7108-427a-b10d-9e811b5c9a81.webp
Comments
NeatNit@discuss.tchncs.de 10 months ago
RubberElectrons@lemmy.world 10 months ago
Same same, cdot is nice and clear
rescue_toaster@lemm.ee 10 months ago
As someone that grades undergraduates, I’m happy that they not use the letter “x” to imply multiplication.
credo@lemmy.world 10 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.
davidgro@lemmy.world 10 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.
tate@lemmy.sdf.org 10 months ago
I need 'em both. Not everything I multiply is a number.
anothercatgirl@lemmy.blahaj.zone 10 months ago
dot product vs cross product
IAmVeraGoodAtThis@lemmy.blahaj.zone 10 months ago
(1)(3)(5)
Fight me
anothercatgirl@lemmy.blahaj.zone 10 months ago
I use asterisk.
tate@lemmy.sdf.org 10 months ago
In LaTeX? You really are a rebel.
AeonFelis@lemmy.world 10 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)Kruemel@feddit.de 10 months ago
times is for cartesian product, cdot if i’m feeling it
the_beber@lemm.ee 10 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.MBM@lemmings.world 10 months ago
or *, if I want to write it explicitly and have no convolution in the expression
But why
thatsTheCatch@lemmy.nz 10 months ago
- is commonly used for multiplication in computer programming, so it’s probably that. Also in your calculator app
NegativeInf@lemmy.world 10 months ago
** for power?
the_beber@lemm.ee 10 months ago
^
for power.**
is usually in a programming setting (but it‘s usually a method and not an operator there.)
thisfro@slrpnk.net 10 months ago
This is the way
ofcourse@lemmy.ml 10 months ago
\cdot
for variables, e.g.,x \cdot y
\times
for numbers, e.g.,2 \times 8
- nothing for combination, e.g.,
2x
Ziglin@lemmy.world 10 months ago
I use
\times
and redefine it as\cdot
ricdeh@lemmy.world 10 months ago
People using the cross for scalar multiplication are insane
10_0@lemmy.ml 10 months ago
Or both when its appropiate
TheyCallMeHacked@discuss.tchncs.de 10 months ago
How about nothing at all
GravitySpoiled@lemmy.ml 10 months ago
cdot is within matrices and times is used for a m \times n matrix
Poach@lemmy.world 10 months ago
(
SkybreakerEngineer@lemmy.world 10 months ago
Depends on whether I want a scalar or vector, sine or cosine
Lemmygradwontallowme@hexbear.net 10 months ago
Aye, why not an asterisk / * ?
It’s also good for multiplying, innit?
r@piefed.social 10 months ago
\cdot for vector products, \times for multiplying plain numbers, whatever i feel like for anything else
dirkgentle@lemmy.ca 10 months ago
Vector dot products go with dot, cross with times.
r@piefed.social 10 months ago
yeah i accidentally left that out
vaderaj@lemmy.world 10 months ago
Cries in Linear Algebra
AtHeartEngineer@lemmy.world 10 months ago
lelgenio@lemmy.ml 10 months ago
Get rotated, idiot.
Image
wisha@lemmy.ml 10 months ago
I just downvoted your comment.
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wisha@lemmy.ml 10 months ago
I didn’t actually downvoted your comment but apprently someone did and now I look like an asshole 😢.