2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/221141This is the first installment of a book on combinatorial and geometric group theory from the topological point of view. This is a classical subject. The installment contains Chapters 1, 3 and 4, and there are nine chapters in total: 1. Combinatorial Complexes 2. Topological Invariants 3. Coverings 4. Galois Theory 5. Generators and Relations 6. The Topological Dictionary 7. Amalgams 8. The Arboreal Dictionary 9. Ends.95 pages, 81 figuresGroup TheoryGeometric Topologytext