Isotoping 2-spheres in 4-manifolds
classification
🧮 math.GT
math.SG
keywords
connectedisotopicsmoothlyspheresbecomediscussexamplehere
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Here we discuss an example of topologically isotopic but smoothly non-isotopic pair of 2-spheres in a simply connected 4-manifold, which become smoothly isotopic after stabilizing by connected summing with S^2 x S^2.
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