Introduction

One of the biggest obstacles to using mathematical expressions on the web is that the user currently needs to worry about layout. Web users should not have to learn a layout engine.

The class is built as a recursive parser. It is pretty easy to add operations to the parser, but it will not scale to a huge set of operations. That is OK, we want to keep things simple. At some point a layout engine may be required for a complexity level. This is not a layout engine.

Currently, only graphical output is generated, but it is hoped that MathML output can be generated automatically if the browser supports it instead of the graphic.

Demo:

Source:

Source is available.

Functions:

f(x)		function of x
f'(x)		derivative of x
f"(x)		second derivative of x
sqrt x		Square root of x
root y x		yth root of x
int _ _ x		integral of x
int 1 3 x		integral from 1 to 3 of x
sum _ _ x		summation of x
sum 1 n x		summation from 1 to n of x
x ^ y		x raised to the yth power
x * y		x times y
bar x		x bar
hat x		x hat
x . y		x times y
x / y		x divided by y
x + y		x plus y
x - y		x minus y
x_y		x sub y
forall x		for all x
exists x		there exists an x
backepsilon		back epsilon
therefore		therefore
x ortho y		x is orthogonal to y
x le y		x is less than or equal to y
x <= y		x is less than or equal to y
x =< y		x is less than or equal to y
inf		infinity
infinity		infinity
leftright		left right arrow
left		left arrow
up		up arrow
right		right arrow
down		down arrow
pm		plus or minus
+-		plus or minus
x ge y		x is greater than or equal to y
x >= y		x is greater than or equal to y
x => y		x is greater than or equal to y
x times y		x times y
x cross y		x cross y
x prop y		x is proportional to y
partial / {partial x}		derivative with respect to x
x dot y		x dot y
x divide y		x divided by y
x div y		x divided by y
x ne y		x not equal to y
x <> y		x not equal to y
x congr y		x is congruent to y
x approx y		x is approximately y
aleph		Aleph
im		imaginary number
real		real number
wp		p function (wp), Weierstrass p
x otimes y		x otimes y
x oplus y		x oplus y
null		null or empty set
empty		null or empty set
x intersect y		x intersection y
x union y		x union y
x supset y		x is a superset of y
x supseteq y		x is a proper superset of y
x notsubset y		x is not a subset of y
x propsubset y		x is a proper subset of y
x subset y		x is a subset of y
x element y		x is an element of y
x in y		x is in y
x notelement y		x is not an element of y
x notin y		x is not in y
angle x		the angle x
nabla		nabla
not x		not x
x and y		x and y
x or y		x or y
x equiv y		x is logically equivalent to y
doubleleftright		double left right arrow
doubleleft		double left arrow
doubleup		double up arrow
doubleright		double right arrow
x implies y		x implies y
doubledown		double down arrow
(x over y)		x choose y

Parenthesis:

visible ()
invisible {}

Greek letters:

alpha is lowercase, Alpha is uppercase.

If you want to send actual e-mail, think about this: My name is david and my domain is eder.us.