Talk:List of simple Lie groups
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I've changed such expressions as a+b to a + b, with spaces on both sides of the "+", and similarly changed such things as p≤q to p ≤ q, for the sake of legibility and conformance to conventions. E.g.:
- Cn II (n > 2, n = p + q, 1 ≤ p ≤ q)
In subsection headings, I've changed capital initial "c" in "compact" and "complex" to lower-case "c"; see Wikipedia:Manual of Style concerning capitalization of initials in section headings. (I hope that split is not, unbeknownst to me, someone's name.)
In such things as Cn in a number of cases I've italicized the subscript n; generally on Wikipedia one should italicize variables in non-TeX mathematical notation, but one should not italicize digits or punctuation -- all this matches TeX style. Michael Hardy 02:12, 11 September 2005 (UTC)
[edit] Center of a simple Lie group
Are we defining a simple Lie group to be a Lie group which is a simple group, or as a Lie group with a simple Lie algebra. In the latter case (which I think is more typical, despite our article on simple Lie groups) a simple Lie group can have a discrete center and the sentence
"Any simple Lie group has a universal cover, whose center is the fundamental group of the simple Lie group."
is not true. -- Fropuff 05:00, 2 October 2005 (UTC)
Beginning a list of simple lie groups with a lie group that is not simple is not a good idea.
