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Continuum theory, point-set topology, spaces with algebraic structure, foundations, dimension theory, local and global properties.

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"Bad" valid edge contractions

In this paper, an edge contraction of a simplicial complex $\Gamma$ is defined as the operation of removing the neighborhood $N_e\Gamma$ of the edge $e=\{0,1\}$ and identifying $N_0\partial N_e\Gamma$ …