**From:** Murray Sargent (*murrays@exchange.microsoft.com*)

**Date:** Sat May 14 2005 - 15:51:36 CDT

**Previous message:**Philippe Verdy: "Re: Corrections to Glagolitic"**Maybe in reply to:**Hans Aberg: "Mathematical Greek Alphanumeric Symbols"**Next in thread:**Philippe Verdy: "Re: Mathematical Greek Alphanumeric Symbols"**Reply:**Philippe Verdy: "Re: Mathematical Greek Alphanumeric Symbols"**Reply:**Jörg Knappen: "RE: Mathematical Greek Alphanumeric Symbols"**Messages sorted by:**[ date ] [ thread ] [ subject ] [ author ] [ attachment ]**Mail actions:**[ respond to this message ] [ mail a new topic ]

The STIX committee (see http://www.unicode.org/reports/tr25/ for

references) chose the sets of mathematical alphanumerics. I agree with

you that sans-serif characters in general are rarely used in

mathematics, at least in the mathematics of physics. My guess is that

the STIX committee didn't find enough mathematical usage for sans-serif

upright and italic Greek characters to justify including them. One can

always resort back to higher-level character formatting to render such

characters, but then the sans-serif distinction is lost on export to

plain text. Such loss would imply a change in semantics. But so far,

anyhow, we haven't seen a need for mathematical sans-serif and

sans-serif italic Greek sets.

Murray

-----Original Message-----

From: unicode-bounce@unicode.org [mailto:unicode-bounce@unicode.org] On

Behalf Of Hans Aberg

Sent: Saturday, May 14, 2005 5:37 AM

To: Unicode List

Subject: Mathematical Greek Alphanumeric Symbols

The Greek letters, relative the Latin ones, in the Mathematical

Alphanumeric Symbols, seem incomplete. The Latin letters exist in the

following forms:

<none>

MATHEMATICAL BOLD

MATHEMATICAL ITALIC

MATHEMATICAL BOLD ITALIC

MATHEMATICAL SANS-SERIF

MATHEMATICAL SANS-SERIF BOLD

MATHEMATICAL SANS-SERIF ITALIC

MATHEMATICAL SANS-SERIF BOLD ITALIC

whereas the Greek letters only have

<none>

MATHEMATICAL BOLD

MATHEMATICAL ITALIC

MATHEMATICAL BOLD ITALIC

MATHEMATICAL SANS-SERIF BOLD

MATHEMATICAL SANS-SERIF BOLD ITALIC

apparently missing the forms:

MATHEMATICAL SANS-SERIF

MATHEMATICAL SANS-SERIF ITALIC

I should say that in traditional math, I think that that only the

following forms are necessary:

<none>

MATHEMATICAL BOLD

MATHEMATICAL ITALIC

MATHEMATICAL BOLD ITALIC

all traditionally typeset having serifs. One possible pure math usage

might be that non-ITALIC (i.e., not slanted) forms are used for

constants, ITALIC forms for variables; BOLD forms to indicate

multi-component forms (such as vectors), as opposed to the non-bold

single component objects. There is no point to discuss the very varied

actual math usage here, which depends on tradition which in its turn

depends on pats availability of glyphs, and different communities, such

as engineers, would do it differently, different groups having

incompatible practises.

But it means that all forms needed in math already are present, but the

Latin letters got some extra forms that are seemingly absent in the

Greek forms.

-- Hans Aberg

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