.\" eqn
.\" ----------------------------------------------------------------
.fp 1 TR Times-Roman
.fp 2 TI Times-Italic
.fp 3 TB Times-Bold
.fp 4 TQ Times-BoldItalic
.fp 5 MR Mathematica1
.fp 6 MB Mathematica1-Bold
.fp 7 SS Symbol-Slanted
.fp 8 S  Symbol
.\" ----------------------------------------------------------------
.de I
.if \\n(.$=0 .ft TI
.if \\n(.$=1 \f[TI]\,\\$1\/\fP
.if \\n(.$=2 \f[TI]\,\\$1\/\fP\\$2
.if \\n(.$=3 \\$1\f[TI]\,\\$2\/\fP\\$3
..
.\" ----------------------------------------------------------------
.sp 3c
.ps 12
.vs 14
.\" ----------------------------------------------------------------
.EQ
gfont TI
grfont TR
delim $$
define mbold % font MB %
.EN
$alpha + beta = gamma$.
$mbold alpha + mbold beta = mbold gamma$.
.I ( Mathematica ""
fonts by Wolfram Research, Inc.)