“…We use definitions and results in surgery theory from [2], [8], [9], [12], [19], [24], [25], and [29], and many applications of them to surgery on stratified manifolds (see [4], [6], [10], [17], [22], [23], and [32]). In Section 2 we prove several general technical results, and then use them to study the closed manifold surgery problem for LP * -groups in the case of a Browder-Livesay pair with an abelian 2-group of the ambient manifold.…”