Below you may find links for further reading related to topology functions and spatial operations provided by TF.NET:

Geometry

• Basic Geometry Properties, ESRI ArcSDE Developer Help
• Geometry (Shape) Validation, ESRI ArcSDE Developer Help
• Concrete Geometry Implementations (Types), ESRI ArcSDE Developer Help

Spatial Relations And Related Operations

• Understanding Spatial Relations, ESRI ArcSDE Developer Help
• Geometry Relationships, The Open Source Java GIS Toolkit Developer Guide
• Geometry Operations, The Open Source Java GIS Toolkit Developer Guide
• Geometry Transformations (Buffer,Locate,ConvexHull), ESRI ArcSDE Developer Help
• Convex Hull (Convex Envelope), Wikipedia Article

The Dimensionally Extended 9 Intersection Model (DE-9IM)

• The Dimensionally Extended 9 Intersection Model (DE-9IM), IBM Informix Spatial DataBlade Module
• Point Set Theory and the DE-9IM Matrix, The Open Source Java GIS Toolkit

Spatial (Coordinate) Reference Systems

• Map Projection Basics, Wikipedia Article
• What is a Coordinate System?, ESRI ArcSDE Developer Help
• Tips on Defining a Coordinate System, ESRI ArcSDE Developer Help

Geometry Simplification

• Simplification of Geometry, The Open Source Java GIS Toolkit Developer Guide
• Douglas-Peucker Algorithm, by Dan Sunday
• Interactive Ramer's Algorithm Implementation, by Dr Mahes Visvalingam

Generic Geometry I/O Support

• The WKT Geometry Representation, Wikipedia Article
• The WKT Geometry Representation, ESRI ArcSDE Developer Help
• The WKB Geometry Representation, ESRI ArcSDE Developer Help
• The GML Geometry Representation, Wikipedia Article
• The ESRI Shape (SHP) Geometry Representation, ESRI ArcSDE Developer Help

Geometry Implementation Tips

• How to Create a Geometry, The Open Source Java GIS Toolkit Developer Guide
• Using UNION to combine a Collection of Geometry, The Open Source Java GIS Toolkit Developer Guide
• The Third Annual Video Review of Computational Geometry, SRC Research Report (PDF)