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Nov
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awarded  Enthusiast
Nov
4
comment How to typeset $:=$ correctly?
@Charles: You make a valid point about <. I might instead compare := to → being used for implication and the type of a function (whose relationship was discovered, I believe, after the notation); or the use of [a,b] for the closed interval from a to b in one context and the commutator of a and b in another; or the use of ⊥ to mean both perpendicular and false. Sometimes identical notations arise, but I don't think there's anything wrong with that if they end up in such different fields.
Nov
4
comment How to typeset $:=$ correctly?
@Charles: I don't think it's any sloppier than, say, an algebraist writing H < G for "H is a subgroup of G". Sure, we think of < as meaning numerically less than, but there's no ambiguity in the context. And there's a related meaning in both cases: both uses of < give rise to a poset, and both uses of := mark some "special" form of equality. And since most mathematicians have no use for the imperative :=, there's no confusion. Just my 2¢. (Personally, I'm not particularly fond of either usage of :=, preferring "we define x to be …" or "x = …" for the one and "var ← value" for the other.)
Nov
3
comment How to typeset $:=$ correctly?
@Charles: I've seen it used for both. Pure mathematicians, who have little use for imperative assignment, I think tend to use it more for definitional equality.
Nov
1
comment Typesetting of negative versus minus?
Now that you mention it, my TI-84+ does/did exactly that; this screenshot of what seems to be an emulator is an example. And SML uses ~3 for negative three, and 3-4 for three minus four, though that's driven out of a desire to avoid ambiguity.
Oct
31
answered Fitting a list of points with TikZ and its \foreach
Oct
28
comment Why do I have so much free space on the left-hand side of my tikz diagram?
I'm not 100% sure, but my guess would be that the control points for the Bezier curve making up the snake path were what were enlarging the picture.
Oct
27
comment Tikz/Pgf if statements
Although this may not be a problem, note that this will fail if #3 is itself a macro (e.g., \maybeSQ). You could use \edef\argiii{#3}, but that fails if there's anything unexpandable in #3. I also started out preferring ifthen, and then moved to TeX \if structures; (I think it's because the syntax is nicer, even if it does have some strange properties); however, string equality is one place where I always use \ifthenelse, for reasons like this.
Oct
27
comment Numbers in math mode when using the iwona package
Additionally, it would help to know what TeX engine you're using: pdfTeX, LuaTeX, XeTeX, ….
Oct
27
answered Tikz/Pgf if statements
Oct
27
awarded  Scholar
Oct
27
comment Changing the style of the first *typeset* line of a paragraph
I just realized I hadn't accepted your answer! I'm sorry about that—it was exactly what I wanted.
Oct
27
accepted Changing the style of the first *typeset* line of a paragraph
Oct
25
answered onlyitems? How to select specific items from an item list
Oct
24
comment Avoiding “rivers” in successive lines of type
Also, FYI: you don't need all those %s. Consecutive white space is treated as a single space, unless it's two newlines in a row.
Oct
23
comment TikZ: multiple decorations on a path.
Interestingly, this doesn't show up with every pathmorphing decoration. If I replace snake with coil, things are still broken; but if I instead use zigzag, lineto, or bent, your code works.
Oct
19
answered How to embed multi-line block of text in maths
Oct
18
answered Modular arithmetic on node names in TikZ?
Oct
18
comment Absolute positioning of wrapfig
I see, and then the idea is that on each page, the figure occurs, say, 2.5" down from the top?
Oct
18
comment Absolute positioning of wrapfig
I'm having trouble visualizing what it is you want. Is there any chance you could draw a picture or an ASCII art diagram or something?