Pseudoholomorphic

We set up an algebraic framework for the study of pseudoholomorphic discs bounding nonorientable Lagrangians, as well as equivariant extensions of such structures arising from a torus action. First, we define unital cyclic twisted A#95;#92;infty algebras and prove some basic results about them, including a homological perturbation lemma which allows one to construct minimal models of such algebras.