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15
28
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Does the Collection of Graphs not Embeddable in a Fixed Orbifold have a Well-quasi-ordering?

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#graph-theory #reference-request #geometric-topology #combinatorial-geometry #orbifolds
79
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SO(3) modded by a finite subgroup

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#algebraic-topology #lie-groups #homotopy-theory #orbifolds
268
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Help with moduli spaces of four-marked spheres

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#geometric-topology #covering-spaces #low-dimensional-topology #moduli-space #orbifolds
60
Views

The definition of slice (orbifolds)

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#group-actions #orbifolds
274
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Find an explicit quasi-smooth embedding $X_{38} \subset \mathbb P(5, 6, 8, 19)$

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#algebraic-geometry #complex-geometry #projective-space #orbifolds #k3-surfaces
176
Views

moduli space of elliptic curves, $\mathbb{H}/SL(2,\mathbb{Z})$ or $\mathbb{H}/PSL(2,\mathbb{Z})$

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#elliptic-curves #moduli-space #orbifolds
416
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Lifting criterion for quotient spaces of non-free group actions

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#algebraic-topology #group-actions #quotient-spaces #orbifolds
39
Views

Problem about orbit size in orbifold

Published on
#hyperbolic-geometry #orbifolds
210
Views

Describe the orbit structure of the action of $GL_n(\mathbb{R})$ on the space of symmetric matrices

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#linear-algebra #abstract-algebra #matrices #symmetric-matrices #orbifolds
66
Views

Circle action on a 5-dimensional manifold and Euler class

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#algebraic-topology #homology-cohomology #geometric-topology #4-manifolds #orbifolds
209
Views

Quotient of 3-torus by $\mathbb{Z}/3\mathbb{Z}$ action

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#group-actions #geometric-topology #orbifolds #equivariant-topology
282
Views

Euler characteristics of quotient stack/orbifold

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#algebraic-geometry #orbifolds
336
Views

Motivation for the definition of orbifold euler characteristic

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#algebraic-geometry #algebraic-topology #definition #motivation #orbifolds
53
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$P(a,b,c)=P(bc,ca,ab)$ weighted projective planes for pairwise coprime $a,b,c$

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#complex-geometry #group-actions #quotient-spaces #projective-space #orbifolds
67
Views

Fractional value of orbifold Euler characteristic: confusing definitions

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#algebraic-topology #orbifolds

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