Wedge sum
Summary
The wedge sum of a family of pointed spaces is their disjoint union with all base points glued to one point. It is the coproduct in the category of pointed spaces. Wedges of circles and of spheres are the basic building blocks of CW complexes and appear throughout homotopy theory.
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About this page
| Tag | 5JSWM1HBX2 |
|---|---|
| URI | m2://5JSWM1HBX2 |
| Kind | concept |
| Writing | W0 stub |
| MSC | 54B17, 55P99 |
| Same as | |
| Changed | 2 November 2026 |
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