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15
113
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Johnson homomorphism image of a Dehn twist about a separating simple closed curve

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#abstract-algebra #homotopy-theory #geometric-topology #mapping-class-group
545
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Change of coordinates principle for mapping class groups

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#geometric-topology #mapping-class-group
927
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General definition of orientation-preserving (continuous) map of surfaces

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#general-topology #orientation #mapping-class-group
342
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Why orientation-preserving homeomorphisms in definition of Mapping Class Group

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#general-topology #mapping-class-group
522
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Why does Dehn twist about the inner circle of of an annulus $A$ act trivially on the arc complex $\mathcal{A}(A)$?

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#mapping-class-group
451
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Self-homeomorphism of punctured unit disk which induces identity-automorphism of fundamental group

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#general-topology #algebraic-topology #homotopy-theory #mapping-class-group
209
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Lift of self-diffeomorphism of punctured disk is quasi-isometry

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#group-theory #riemannian-geometry #geometric-group-theory #mapping-class-group
117
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Mapping-Class Groups of Subsurfaces of a Hyperbolic Surface

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#riemann-surfaces #hyperbolic-geometry #moduli-space #teichmueller-theory #mapping-class-group
97
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Do these curves fill the surface?

Published on
#mapping-class-group
170
Views

Mapping Class Group of Disc Proof

Published on
#geometric-topology #low-dimensional-topology #mapping-class-group
156
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Existence of mapping class group subgroups isomorphic to the whole group?

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#algebraic-topology #geometric-group-theory #mapping-class-group
40
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abut curves on a surface

Published on
#surfaces #low-dimensional-topology #mapping-class-group
221
Views

Mapping class group of a 4-punctured disc

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#surfaces #low-dimensional-topology #mapping-class-group
1.1k
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mapping class group of a 4-punctured sphere

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#low-dimensional-topology #mapping-class-group
550
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mapping class group of 4-punctured sphere vs. that of the torus

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#low-dimensional-topology #mapping-class-group

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