In mathematics, the operators provided on keyboard are quite clear for addition, subtraction and divide:
+ - /.
The multiplication sign
* might be familiar as the multiplication for programmer, but I'm not sure about ordinary user. I don't know if I should use
x for multiplication.
The purpose is to provide user detail of how each field will be used:
One drawback I can think of is if using
x might rely on font face and if user changes the font,
x might not be appear like multiplication sign.
Also, by the standard
* (asterisk) should be used to multiplication, but
I'm not sure about its readability.
It's a shame that I found the solution after posting my own question.
So I will just share it there. Wikipedia recommends using The HTML entity
× which will be resulted in × for multiplication:
It would certainly be a mistake to use the letter
x as the multiplication symbol as
x itself often denotes an algebraic term:
x x y = c
x x y = c
x × y = c
x × y = c
&#D7; character looks like this: × so it is a proper cross, as opposed to the letter
x (ex) or
* (asterisk) symbols which are a lazy approach and don't create symmetrical symbols about the major axes.
× version is simply the friendly version of the same code.
For additional reference, for divide you can also use
÷ to get ÷
For minus you might expect to use direct from the normal key, but there is a separate code for that too
− − which aligns it vertically with the keyboard plus symbol, so you get ( −+
−+ ) instead of the keyboard minus and plus, which may not be aligned depending on the font ( -+
You can get the plus/minus via
± ± .
There is another Wikipedia entry for the symbol itself, which currently consists of the information below:
(sorry, this is an image - so links are not real!)
x x y = c - Bad for obvious reasons
x × y = c - Also bad, but less so. It looks like
(x^x)*y (x raised to the x, times y)
x * y = c - I would consider this the obvious choice, especially since using dot for multiplication is standard for Pre-Algebra and beyond. (Roughly age 13 or 14 and older in the US)
In addition to all of the other pro voices for *, the numeric keypad on my keyboard has a * for times. That's another argument, IMO, for using it.