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15
226
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Getting a self-homeomorphism of the cylinder from a self-homeomorphism of the circle

Published on
#general-topology #differential-topology #low-dimensional-topology
79
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Does $S^2\times[-1,1]$ decompose as $B^3\#B^3$

Published on
#manifolds #low-dimensional-topology
84
Views

Homologically zero circles in smooth manifolds

Published on
#algebraic-topology #differential-topology #geometric-topology #low-dimensional-topology
79
Views

Can we really move disks around a compact surface like this?

Published on
#manifolds #surfaces #polytopes #low-dimensional-topology
208
Views

Why is this not a valid proof of the Poincare Conjecture?

Published on
#manifolds #3d #low-dimensional-topology
210
Views

Regarding Surgery and Orientation

Published on
#low-dimensional-topology #orientation #surgery-theory
797
Views

Can a one-dimensional shape have volume?

Published on
#low-dimensional-topology #dimensional-analysis
163
Views

The inside of a closed compact surface $\sum_g$

Published on
#differential-topology #knot-theory #low-dimensional-topology
80
Views

How do you prove that this set is open?

Published on
#real-analysis #linear-algebra #general-topology #low-dimensional-topology
118
Views

Understanding cobordisms constructed from a Heegaard triple

Published on
#manifolds #geometric-topology #low-dimensional-topology
75
Views

Boundary of Seifert Fibered Space is a $T^2$ or $K^2$

Published on
#low-dimensional-topology #manifolds-with-boundary
73
Views

Intersection form of a Pseudomanifold

Published on
#algebraic-topology #quadratic-forms #low-dimensional-topology #singularity-theory
86
Views

Identifying boundaries of handlebodies to get 3-manifolds

Published on
#manifolds #geometric-topology #low-dimensional-topology
58
Views

Finding a heegaard splitting for general $\sum_g\times I/\phi$

Published on
#low-dimensional-topology #compact-manifolds
401
Views

Understanding a Bill Thurston popularization of knot complements

Published on
#knot-theory #low-dimensional-topology

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