We prove the spaceability of set hypercyclic vectors for shift-like operators. Shift-like operators appear naturally as composition on Lp(X), when underlying space X is dissipative. In process proving main theorem, we provide, among other results independent interest, a characterization weakly mixing dissipative bounded distortion.

We prove that for any n ≥ 1 there exist n × n matrices A and B such that for any vector x ∈ R with a nonzero first component, the orbit of x under the action of the semigroup generated by A and B is dense in R. As a corollary, we prove that for a large set of diagonal matrices A and B and any vector V with nonzero entries, the orbit of any vector under the semigroup generated by the affine maps...