Contents:

• Mathics Setup Code Read on Loading
• Mathics Packages
• Mathics from Python
  • Using Mathics from your code
    • From a shell
    • Using MathicsSession
    • Mathics Results as Python Objects
      • Conversion to and from Python
  • Extending Mathics Tutorial
    • Hello, World! – using Predefined
    • Introducing the Builtin Class
    • Adding Help (Information[]) Text
    • Writing Document Tests
    • Working with Multiple Patterns
    • Function Application via Rules
    • Class Attributes
    • Emitting warnings
  • Documentation Markup
    • For Help Text
    • For Testing
  • Contributing & Developing
    • Contributing
    • Developing
  • Misc stuff that hasn’t been split off yet
    • Documentation and tests
      • Dependencies
• Mathics Core Interpreter Overview
  • Session
    • Definitions
    • session.evaluate() at a High Level
    • Expression.format()
  • Scanning and Parsing
    • Tokeniser
    • Parser
    • Python Code for Parsing an String
  • AST, M-Expression, General List: same thing
  • Evaluation of an Expression
    • Evaluation Overview
    • Evaluation can leave an Expression Seemingly Unchanged
    • Broad Description of the Rewrite/Apply/Eval Process
    • Detailed Rewrite/Apply/Eval Process
      • Gather information from Head and gather its leaves
      • Build a new Expression
      • Compute evaluation timestamp
      • Setup Thread rewrite Listable Functions
      • Search for a Rule in Head to apply
      • Apply Rule or restore Expression
    • Mathics Function Application
    • Built-in Function Name Descriptions
    • Python Code for Evaluating an Expression
  • Pattern Matching in Evaluation
    • Pattern Classes
  • Forms, Boxes, and Formats
    • Forms
    • The Box Model
    • Output Formats
  • Object Classes
    • Class Diagram for Some of the Classes
    • Atom Class
    • BaseElement Class
    • Builtin class
    • Definition Class
    • Definitions Class
    • Expression Class
    • Predefined Class
    • Symbol Class
    • Operator
    • PrefixOperator and PostFixOperator
    • BinaryOperator and UnaryOperator
    • SympyConstant, MPMathConstant, and NumpyConstant
    • SympyFunction and MPMathFunction
    • Which Class should be used for a Mathics Object?
  • Glossary