Andreschulz

Hey, welcome to Wikipedia! If you have any questions about editing here, don't hesitate to ask me, either on my talk page (User talk:David Eppstein) or by email. There's a prepackaged welcome message at {{welcome}} that you might find helpful but I won't clutter your talk page with it — click on the link if you want some introductory Wikipedia-editing material. —David Eppstein (talk) 15:51, 2 August 2011 (UTC)

notation conventions

Hello.

I did some copy-editing on Petersen's theorem. Notice in particular:

• You shouldn't indiscriminately italicize everything that's in non-TeX mathematical notation. Variables are italicized; digits and parentheses and the like are not; thus one writes: 4(x + 3), not 4(x + 3). The point is to make it consistent with the usage found in TeX:

$4(x+3)\,$

• A minus sign looks different from a hyphen, and things like "+", "−", "<", etc. should be preceded and followed by a space. Thus

U-V

does not look the same as

U − V.

(I usually make the spaces non-breakable.)

• \deg is a standard operator name, thus

$n\deg V\,$

So there is no occasion to write \text{deg}. Notice that a space precedes and follows $\deg$ above, put there automatically by the software.

These things are codified in WP:MOSMATH. Michael Hardy (talk) 18:05, 13 February 2013 (UTC)