HP-UX Reference (11i v2 03/08) - 1 User Commands N-Z (vol 2)
n
neqn(1) neqn(1)
Matrices and Determinants
Matrices are made with matrix:
Source Text Result
left | { matrix { |xi 1 |
lcol { x sub i above y sub 2 } | |
ccol { 1 above 234}}}right | |y2 234|
||
In addition, there is rcol for a right-aligned column.
Diacritical Marks
Diacritical marks are made with
dot,
dotdot, hat, tilde, bar, vec, dyad, and under:
Source Text Result
x dot = f(t) bar . ____
x=f(t)
y dotdot bar ˜=˜ n under __
..
y=x
_
x vec ˜=˜ y dyad - -
x=y
Point Sizes and Fonts
Point sizes and fonts can be changed with size n or size +
|-n, roman, italic, bold, and font n.
Point sizes and fonts can be changed globally in a document by
gsize n and gfont n, or by the
command-line arguments
-sn and -fn.
Normally, subscripts and superscripts are reduced by 3 points from the previous size; this can be changed
by the command-line argument
-pn.
Vertical Alignment
Successive display arguments can be lined up. Place
mark before the desired lineup point in the first
equation; place lineup at the place that is to line up vertically in subsequent equations.
Shorthand Forms
Shorthand forms can be defined or existing keywords redefined with
define:
define thing % replacement %
defines a new token called thing that is replaced by replacement whenever it appears thereafter. The %
can be any character that does not occur in replacement . The spaces around the % delimiters are
required.
Other Keywords
Keywords such as sum (displayed as R, standing for uppercase sigma), int (ˆ, integral sign), inf (oo,
infinity sign), and shorthands such as >= (> overstruck by _), != (= overstruck by /), and -> (->) are
recognized. Greek letters are spelled out in uppercase or lowercase as desired, as in alpha (displayed as
A, standing for lowercase alpha) or GAMMA (displayed as G, standing for uppercase gamma). Mathemati-
cal words such as sin (sin), cos (cos), and log (log) are made Roman automatically. nroff four-
character escapes, such as \(dd (| overstruck by =, standing for double dagger) and \(bu (o over-
struck by +, standing for bullet), can be used anywhere.
HP-UX 11i Version 2: August 2003 − 3 − Hewlett-Packard Company Section 1−−571