Abstract
We prove that if K⊂ S3 is either: (I) a link with an essential n-string arcbody decomposition, where at least one arcspace has incompressible boundary, or a knot with an essential n-string tangle decomposition, where (II) each tangle has no parallel strings, or (III) one tangle space is not a handlebody and K is not cabled, then any nontrivial surgery on every component of K produces irreducible manifolds in all cases (with some exceptional surgeries in case (I)) and, in particular, Haken manifolds in cases (I) and (III). Moreover, if K is hyperbolic in (III) and at least one tangle space has incompressible boundary, then all nontrivial surgeries on K are also hyperbolic; this last result is also established for type (I) decompositions under some constraints.
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