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Follow-up to Previous Question on Klein Bottle

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#algebraic-topology
282
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Homology of stunted infinite real projective space

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#algebraic-topology
569
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Can the winding number be a non-integer?

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#algebraic-topology
409
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$H_0(X) \cong \tilde{H}_0(X) \oplus \mathbb{Z}$ isomorphism in algebraic topology

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#algebraic-topology
169
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Basic idea for finding critical point via Morse theory

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#algebraic-topology #homological-algebra #homology-cohomology #morse-theory
121
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homotopy group of the limit space

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#abstract-algebra #limits #algebraic-topology #convergence-divergence #fiber-bundles
208
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Local degree of local homeomorphism is $\pm 1$

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#algebraic-topology #proof-verification
48
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Could anyone suggest me a counter example about liftings?

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#algebraic-topology
521
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How do you compute the simplicial homology of an $n$-gon with all edges and vertices identified?

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#algebraic-topology
544
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Mapping torus of Klein bottle, from discussion in Hatcher p. 152.

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#algebraic-topology #homology-cohomology
1.3k
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Homeomorphic, homotopy equivalent and deformation retracts. How do I get a feeling for this?

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#algebraic-topology
223
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Description of real projective spaces in various contexts

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#linear-algebra #geometry #algebraic-topology #projective-geometry
475
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connected sum of two surfaces

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#algebraic-topology #manifolds
243
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Path Homotopy in a Topological Annulus

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#general-topology #algebraic-topology
2k
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Homeomorphism - transforming mug into donut

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#general-topology #algebraic-topology

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