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A group presentation gives a two-dimensional cell complex with one vertex, one oriented loop for each generator, and one 2-cell attached along each relator. Its fundamental group is the presented group.

Ancestors (8)

  1. Fundamental group after attaching a 2-cell
  2. Seifert-van Kampen theorem
  3. Fundamental group
  4. Algebraic topology
  5. Geometry and topology
  6. Area of mathematics
  7. Mathematics
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