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Fundamental group of Hawaiian earring

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Prove fundamental group is the direct product

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#algebraic-topology #homotopy-theory #fundamental-groups
261
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Homotopy of a (non-spherical) cow.

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#recreational-mathematics #fundamental-groups
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The fundamental group of a topological group is abelian

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#algebraic-topology #topological-groups #fundamental-groups
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Fundametal Group and Étale Fundamental Group

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#algebraic-geometry #algebraic-topology #fundamental-groups
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how should I show that it is wedge of infinite circles?

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#general-topology #algebraic-topology #homotopy-theory #fundamental-groups
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Computation of fundamental group of pseudo circle

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121
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problem to find open subset that contains sphere for wedge of two spheres.

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#algebraic-topology #fundamental-groups
434
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identification of polygons sides

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#algebraic-topology #fundamental-groups
41
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fundamental group of $X=\{(x_0,x_1,\dots, x_n)\in S^{n}| x_{0}^2 +x_{1}^2 <1 \}$ for $n\geq 3$

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#general-topology #algebraic-topology #fundamental-groups
143
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Fundamental group of $S^1 \cup \{(x,y) : xy=0 \}$

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#algebraic-topology #fundamental-groups
60
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Any element $\alpha \in \pi_1(M)$ can be represented by a smooth closed path without self-intersections

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#manifolds #fundamental-groups
247
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Questions about the proof of Chen's $\pi_1$-de Rham theorem in Hain's Hodge Structure on $\pi_1$ paper

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#integration #algebraic-geometry #algebraic-topology #fundamental-groups #hodge-theory
357
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Looking for theorem of form: If [curvature hypotheses, etc] then every class in $\pi_1(M)$ is uniquely represented by a closed geodesic

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#reference-request #algebraic-topology #riemannian-geometry #hyperbolic-geometry #fundamental-groups
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Calculation of fundamental group using Van Kampen

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#algebraic-topology #fundamental-groups

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