{\mathit \pi} {\mathrm \pi} it's all Greek to me!
Tony Corless
Help, please.
I am beginning to get seriously confused over the selection of italic
and upright (roman) Greek characters in Latex2e (Emtexgi) in various
modes.
I seem to be ok provided that I am dealing with upper-case Greek. That
is {\mathit \Theta} is definitely not the same as {\mathrm \Theta}. This
is exactly as indicated in the TeX book.
However, I now need to distinguish a variable \pi (italic) from the
constant \pi (upright). Changing the symbol used for the variable is not
an option. Here, my reading of the TeX book let me down, as it seemed to
suggest I have a problem. If there is a LaTeX solution it has eluded me,
despite, I thought, careful reading of the Companion.
As far as I can tell there are no packages loaded which might affect
this operation - maybe there ought to be one to effect it.
--
Tony Corless
Young U. Ryu
Tony Corless <To...@corless.demon.co.uk> wrote in article
<EB4fkEA21$J0E...@corless.demon.co.uk>...
> Help, please.
>
> I am beginning to get seriously confused over the selection of italic
> and upright (roman) Greek characters in Latex2e (Emtexgi) in various
> modes.
>
> I seem to be ok provided that I am dealing with upper-case Greek. That
> is {\mathit \Theta} is definitely not the same as {\mathrm \Theta}. This
> is exactly as indicated in the TeX book.
This is because uppercase Greek letters are from cmr, which
contains text alphabets. So \mathrm and \mathit on uppercase Greek letters
work as they do on text alphabets.
> However, I now need to distinguish a variable \pi (italic) from the
> constant \pi (upright). Changing the symbol used for the variable is not
> an option. Here, my reading of the TeX book let me down, as it seemed to
> suggest I have a problem. If there is a LaTeX solution it has eluded me,
> despite, I thought, careful reading of the Companion.
On the other hand, lowercase Greek letters are from cmmi, not cmr.
Thus, \mathrm and \mathit on lowercase Greek letters
do not work as they do on uppercase Greek letters.
As far as I know, the standard CM fonts do not contain upright lowercase
Greek letters. To have upright lowercase Greek letters, you must use
other fonts, such as Type 1 Symbol or, perhaps, Greek fonts available
from CTAN.
Young
Berthold K.P. Horn
Tony Corless <To...@corless.demon.co.uk> wrote in article
<EB4fkEA21$J0E...@corless.demon.co.uk>...
> I am beginning to get seriously confused over the selection of italic
> and upright (roman) Greek characters in Latex2e (Emtexgi) in various modes.
> I seem to be ok provided that I am dealing with upper-case Greek. That
> is {\mathit \Theta} is definitely not the same as {\mathrm \Theta}. This
> is exactly as indicated in the TeX book.
> However, I now need to distinguish a variable \pi (italic) from the
> constant \pi (upright). Changing the symbol used for the variable is not
> an option. Here, my reading of the TeX book let me down, as it seemed to
> suggest I have a problem. If there is a LaTeX solution it has eluded me,
> despite, I thought, careful reading of the Companion.
The CM fonts contain upright versions of the 11 uppercase Greek
symbols (in the text fonts). The CM font set only has italic
lowercase Greek (in the `math italic' font). You need to use some
other font set like the printer resident `Symbol' font, or fonts from
the Lucida Bright Expert font set or the MathTime Plus font set.
--
Berthold K.P. Horn mailto:bk...@ai.mit.edu
Cambridge, Massachusetts, USA
DISCLAIMER: repsondent has connections with http://www.YandY.com
J%org Knappen
In article <EB4fkEA21$J0E...@corless.demon.co.uk>, Tony Corless <To...@corless.demon.co.uk> writes:
"> "Help, please.
"> "I am beginning to get seriously confused over the selection of italic
"> "and upright (roman) Greek characters in Latex2e (Emtexgi) in various
"> "modes.
"> "I seem to be ok provided that I am dealing with upper-case Greek. That
"> "is {\mathit \Theta} is definitely not the same as {\mathrm \Theta}. This
"> "is exactly as indicated in the TeX book.
Indeed it is.
"> "However, I now need to distinguish a variable \pi (italic) from the
"> "constant \pi (upright). Changing the symbol used for the variable is not
"> "an option. Here, my reading of the TeX book let me down, as it seemed to
"> "suggest I have a problem. If there is a LaTeX solution it has eluded me,
"> "despite, I thought, careful reading of the Companion.
For using upright lowercase greek letters, you need to have them in a
font first. Sounds trivial, but this is the problem: The original cm fonts
contain capital greek letters in an abundant number of styles, but only math
italic greek lowers and nothing else.
"> "As far as I can tell there are no packages loaded which might affect
"> "this operation - maybe there ought to be one to effect it.
There are no ready made packages to achieve upright lowercase greek in math, but
if you want, you can make one yourself.
Take greek fonts (I suggest the kdgreek fonts, because they are also used by the
babel system and seem to be the most widespread currently), write an appropriate
fd-file and set up commands to access the lowercase greek letters.
You can glean a lot from the file amssymb.dtx and amsfonts.dtx coming with
the amslatex bundle.
--J"org Knappen
P.S. The question was asked not too long ago. Maybe you can find out the person
who asked it and you can cooperate on a nice upright greek package.
Berthold K.P. Horn
kna...@iphcip1.Physik.Uni-Mainz.DE (J%org Knappen) writes:
> "> "I am beginning to get seriously confused over the selection of italic
> "> "and upright (roman) Greek characters in Latex2e (Emtexgi) in various
> "> "modes.
> "> "I seem to be ok provided that I am dealing with upper-case Greek. That
> "> "is {\mathit \Theta} is definitely not the same as {\mathrm \Theta}. This
> "> "is exactly as indicated in the TeX book.
> "> "However, I now need to distinguish a variable \pi (italic) from the
> "> "constant \pi (upright). Changing the symbol used for the variable is not
> "> "an option. Here, my reading of the TeX book let me down, as it seemed to
> "> "suggest I have a problem. If there is a LaTeX solution it has eluded me,
> "> "despite, I thought, careful reading of the Companion.
> For using upright lowercase greek letters, you need to have them in a
> font first. Sounds trivial, but ...
The two alternatives to CM --- Lucida Bright and MathTime --- have upright
Greek in their `expert' companion font sets --- Lucida Bright Expert
and MathTime Plus. MathTime Plus in addition has a `text' upright Greek,
not for typesetting text, but for upright Greek symbols like alpha-paricules,
pi-mesons and so on.
> ...this is the problem: The original cm fonts
> contain capital greek letters in an abundant number of styles, but only math
> italic greek lowers and nothing else.
--
Berthold Horn
Cambridge Mass USA
DISCLAIMER: respondent has connections with http://www.YandY.com