Seifert van Kampen: the pointFocuses on the Seifert van Kampen theorem, demonstrating an isomorphism between fundamental groups using a three-dimensional diagram.
Topology: HomeomorphismsCovers the concept of homeomorphisms in topology, focusing on functions that preserve topological properties.
Spatial relations and topologyCovers spatial relations and topology in GIS, emphasizing the importance of topological consistency in spatial analysis.