Abstract: Systems and methods for mapping character codes for characters of an mathematical expression based on changes in formatting for the characters. A system can include a document module configured for input of a mathematical expression including a plurality of characters, a format module configured to change formatting of the characters of the mathematical expression, and a mapping module configured to map a character code for one or more of the characters from a first value to a second value upon changing of the formatting of the characters. A method can include allowing entry of a mathematical expression including a plurality of characters on a computer system, allowing formatting of one or more of the characters to be changed, and mapping character codes for one or more of the characters upon changing of the formatting of the characters.

Abstract: An extensible markup language-based schema for representing a mathematical expression in documents. The schema can include a single math tag indicative of text and operators of the mathematical expression. The schema can also include format attributes indicative of one of a plurality of formats to be applied to the mathematical expression.

Abstract: A programmable object model for one or more mathematical expressions in a section of a document. The model can include a buildup module programmed to build up the one or more mathematical expressions in the section. The model can include a linearize function module programmed to convert the one or more mathematical expressions in the section to a linear format. The model can also include an addition module programmed to convert a portion of the document to a mathematic expression, and a removal module programmed to remove mathematical formatting from the one or more mathematical expressions in the section. The model can further include a conversion module programmed to convert the one or more mathematical expressions in the section to MathML.