Algebraic Topology · Problem 2.1.1

Homology — Allen Hatcher

Mathematics — Topology · simplicial-homology-delta-complexes

Problem

What familiar space is the quotient Δ\Delta-complex of a 2-simplex [v0,v1,v2][v_0, v_1, v_2] obtained by identifying the edges [v0,v1][v_0, v_1] and [v1,v2][v_1, v_2], preserving the ordering of vertices?

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