fundamental group in Vietnamese
@Chuyên ngành kỹ thuật
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Sentence patterns related to "fundamental group"
1. The fundamental group of an H-space is abelian.
2. For example, Henri Poincaré founded what is now called algebraic topology by introducing the fundamental group.
3. Zariski had been working on the fundamental group of the complement of an algebraic curve, and he had found generators and relations for the fundamental group but was unable to show that he had found sufficient relations to give a presentation for the group.
4. In terms of the fundamental group in algebraic topology, the HNN extension is the construction required to understand the fundamental group of a topological space X that has been 'glued back' on itself by a mapping f (see e.g. Surface bundle over the circle).
5. BS(1, 1) is the free abelian group on two generators, and BS(1, −1) is the fundamental group of the Klein bottle.
6. Also directly from the definition, an Aspherical space is a classifying space for its fundamental group (considered to be a topological group when endowed with the discrete topology).