multiplication
multiplication
(OP)
There are at least three symbols to denote multiplication: the middle dot as in a·b, the asterisk (a*b) and the cross (a×b). My question: what is the experts' preference?
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RE: multiplication
John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:
To an Engineer, the glass is twice as big as it needs to be.
RE: multiplication
a times b = ab
6 times z = 6z
etc...
For expressions with all constants (numerals), here is the requirement from IEEE Style Guide:
A multiplication sign (×), not the letter “x” or a multidot (·), should be used to indicate multiplication of
numbers and numerical values, including those values with units (e.g., 3 cm × 4 cm).
So 6 times 3 will be 6 × 3
The dot and cross should be used only when representing matrix functions, except that the dot should also be used in compound unit expressions:
N·m
in·lb
etc...
Them's the rules I gots to follow. But then my grammar are perfect and I would never allow myself to spuriously split an infinitive.
Best to you,
Goober Dave
Haven't see the forum policies? Do so now: Forum Policies
RE: multiplication
I printed out two dozen copies, double sided, in color, about 100 pages for each copy... and then I discovered that the printer (or printer driver) didn't recognize that particular symbol and left a gap instead.
RE: multiplication
° Ω Δ ÷ μ Σ ® ± ¼ ½ © ƒ ≥ ≤ √ ß ± ¼ ½ ƛ Ø
The engtips font handler or TGML or whatever you call it got all of them right except the last one. It should be a lowercase sigma. I'll put it in here with the TGML code: σ
Best to you,
Goober Dave
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RE: multiplication
Fe (IronX32)
RE: multiplication
What is Engineering anyway: FAQ10881484: In layman terms, what is "engineering"?
RE: multiplication
I keep running into problems with the IEEE juxtaposition technique with the common symbol for "specific gravity" in my industry being "SG". If I regularly said x times y = xy, then my students would be justified in thinking "SG = S times G" or "kg = k times g". It may be dumb to have a 2 character variable, but that is the way this industry does it.
David Simpson, PE
MuleShoe Engineering
"Belief" is the acceptance of an hypotheses in the absence of data.
"Prejudice" is having an opinion not supported by the preponderance of the data.
"Knowledge" is only found through the accumulation and analysis of data.
RE: multiplication
David Simpson, PE
MuleShoe Engineering
"Belief" is the acceptance of an hypotheses in the absence of data.
"Prejudice" is having an opinion not supported by the preponderance of the data.
"Knowledge" is only found through the accumulation and analysis of data.
RE: multiplication
@oklhydro, you sound like a guy who'd check that the degree sign is not a superscript "o", again
Quando Omni Flunkus Moritati
RE: multiplication
Before you doing anything creative, make sure the code likes the artwork you are trying to wow the world with.
RE: multiplication
When using the United States  International keyboard layout the traditional multiplication sign is obtained with RIGHT ALT + [=] = ×
Personally, i do not like * because that is the Excel(TM) solution, not recognized by math.
In algebra it is traditional to avoid the multiplication sign altogether: a.b.c = abc
For grade school students it is perhaps clearer to use a×b, for high school and college perhaps no sign is ok, so I would say it depends on the audience and the intent.
saludos.
a.
RE: multiplication
x*y % Full matrix multiplication
x.*y % Elementwise multiplication
No single system is transferable from paper to computer. Or even between mathematical engines.
 Steve
RE: multiplication
John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:
To an Engineer, the glass is twice as big as it needs to be.
RE: multiplication
==========
"Is it the only lesson of history that mankind is unteachable?"
Winston S. Churchill
RE: multiplication
John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:
To an Engineer, the glass is twice as big as it needs to be.
RE: multiplication
ab is a times b
(xy)(z=b)
but to answer your question, I'm not sure I'm some expert, just an experienced practitioner. Also, I use all of these symbols.
fd
¡papá gordo ain’t no madre flaca!