A van Kampen theorem for unions of non-connected spaces

@article{Brown1984AVK,
  title={A van Kampen theorem for unions of non-connected spaces},
  author={Ronald Brown and Abdul Razak Salleh},
  journal={Archiv der Mathematik},
  year={1984},
  volume={42},
  pages={85-88}
}
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33 Citations
Background Citations
8
Methods Citations
6

33 Citations

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We generalize the Van Kampen theorem for unions of non-connected spaces, due to R. Brown and A. R. Salleh, to the context where families of subspaces of the base space B are replaced with a ‘large’…
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TLDR
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Distributed computation of low-dimensional cup products
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References

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Introduction The fundamental groupoid TT(X) of a topological space X has been known for a long time but has been regarded, usually, as of little import in comparison with the fundamental group—for…
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A van Kampen theorem
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TLDR
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