Lineability of the set of bounded linear non-absolutely summing   operators
  In this note we solve, except for extremely pathological cases, a question posed by Puglisi and Seoane-Sepulveda on the lineability of the set of bounded non-absolutely summing linear operators. We also show how the idea of the proof can be adapted to several related situations. 
G. Botelho, D. Diniz and D. Pellegrino