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math.GT2019
Non-separating immersions of spheres and Bing houses
Michael Freedman, T. Tam Nguyen Phan
We construct Bing houses in all dimensions , obtaining non-separating PL immersions of .
math.GT2019
A remark on -maps in dimension 1
T. Tam Nguyen Phan
Let be a surjective map from the standard unit circle to a graph such that the pre-image of each point has diameter less than .…