contractible वाक्य
उदाहरण वाक्य
मोबाइल
- Spaces that are homotopy equivalent to a point are called contractible.
- Any fiber bundle over a contractible CW-complex is trivial.
- Since is a fibration with contractible fibre, sections of exist.
- Non-contractible in general have non-trivial de Rham cohomology.
- Furthermore, every cone is contractible to the vertex point by the homotopy
- For example, an open ball is a contractible manifold.
- All manifolds homeomorphic to the ball are contractible, too.
- In particular, the universal covering of such a space is contractible.
- Every collapsible complex is contractible, but the converse is not true.
- Since the half-plane is contractible, all bundle structures are trivial.
- The cone on a space " X " is always contractible.
- Every contractible space is path connected and simply connected.
- There exists a contractible space on which acts freely.
- If is contractible then and are homotopy equivalent spaces.
- In fact, these satisfy the much stronger property of being locally contractible.
- In particular, cv _ n is also contractible.
- It makes no sense at this point to talk about the most contractible issue.
- The first is that of homotopy contractible complexes.
- A square is a contractible topological space, which implies that it has trivial homology.
- This results were later generalized to other contractible manifolds by Casson, Harer and Stern.
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