Contents:

• Mathics3 Setup Code Read on Loading
• Mathics3 Packages
• Setup for Developing Mathics3 Python Code
  • Developer Python Code-Checking Packages
  • Optional but Useful Developer Python Packages
• Mathics3 from Python
  • Using Mathics3 from your code
    • From a shell
    • Using MathicsSession
    • Mathics3 Results as Python Objects
      • Conversion to and from Python
  • Tutorial: Adding a new Mathics3 Function
    • Hello, World! – using Predefined
      • Introducing the Builtin Class
        • Adding Help (Information[]) Text
    • Introducing the Builtin Class
      • Adding Help (Information[]) Text
        • Writing Document Tests
    • Adding Help (Information[]) Text
      • Writing Document Tests
        • Working with Multiple Patterns
    • Writing Document Tests
      • Working with Multiple Patterns
        • Function Application via Rules
    • Working with Multiple Patterns
      • Function Application via Rules
        • Class variables and Function Attributes
    • Function Application via Rules
      • Class variables and Function Attributes
        • Emitting warnings
    • Class variables and Function Attributes
      • Emitting warnings
    • Emitting warnings
  • Case Studies for Adding Builtins
    • Selecting a Builtin to add
      • Adding Builtin Undefined
        • Decide where in the code and document to place the code in Mathics
        • What is Undefined?
        • Is there something similar to Undefined that we can use as an example?
        • First Skeletal version
        • Checking the Skeletal version
        • Completing Undefined
        • Testing Undefined
        • Pytest testing of Undefined
      • Adding Builtin Function KroneckerProduct
        • Finding a corresponding SymPy function and Wikipedia name for KroneckerProduct
        • KroneckerProduct placement in Mathics
        • KroneckerProduct Basic Skeleton
        • Checking the KroneckerProduct[] Skeletal Version
        • Completing KroneckerProduct
        • Testing KroneckerProduct[]
      • Adding Builtin Function Curl
        • Writing Curl in Mathics
        • Curl placement in Mathics3
        • Find corresponding Sympy, SciPy, mpmath, or NumPy function
        • Basic version of Curl using Rules
    • Adding Builtin Undefined
      • Decide where in the code and document to place the code in Mathics
        • What is Undefined?
      • What is Undefined?
        • Is there something similar to Undefined that we can use as an example?
      • Is there something similar to Undefined that we can use as an example?
        • First Skeletal version
      • First Skeletal version
        • Undefined Title Line
        • Undefined Symbol Definition Description
        • User-Oriented Examples
      • Checking the Skeletal version
        • Completing Undefined
      • Completing Undefined
        • Testing Undefined
      • Testing Undefined
        • Pytest testing of Undefined
      • Pytest testing of Undefined
        • Adding Builtin Function KroneckerProduct
    • Adding Builtin Function KroneckerProduct
      • Finding a corresponding SymPy function and Wikipedia name for KroneckerProduct
        • KroneckerProduct placement in Mathics
      • KroneckerProduct placement in Mathics
        • KroneckerProduct Basic Skeleton
      • KroneckerProduct Basic Skeleton
        • KroneckerProduct Title Line
        • KroneckerProduct Function Definition Description
        • KroneckerProduct Examples
      • Checking the KroneckerProduct[] Skeletal Version
        • Completing KroneckerProduct
      • Completing KroneckerProduct
        • KroneckerProduct[] skeletal code
        • KroneckerProduct[] class variables
        • KroneckerProduct[] evaluation method
        • KroneckerProduct[] evaluation method, second version
      • Testing KroneckerProduct[]
        • Adding Builtin Function Curl
    • Adding Builtin Function Curl
      • Writing Curl in Mathics
        • Two-dimensional Mathematical Definition
        • Two-dimensional Mathics3 Function
        • Three-dimensional Mathematical Definition
        • Three-dimensional Mathics3 Function
        • Adding Curl as an autoloaded function
        • Testing autoloaded Curl function
      • Curl placement in Mathics3
        • When there is no existing section in Mathics3 already…
      • Find corresponding Sympy, SciPy, mpmath, or NumPy function
        • Curl placement in Mathics3
      • Basic version of Curl using Rules
        • Basic Curl version
  • Documentation Markup
    • Markup in Documentation
    • Markup for Code Examples
      • Example of >>, =, and = ...
      • Example of #>
      • Examples of S>
  • Guidelines for Writing Documentation
    • Title
    • Definition Block
    • Extended Description Section
  • Contributing & Developing
    • Contributing
    • Developing
  • Running Tests
    • Unit tests
    • Doctests
      • Dependencies