Contributed by Adam Simon / Two galleries with a focus on abstract painting, a short walk from each other in downtown Manhattan, currently have exhibitions that share a vocabulary of basic geometric forms, directional brushwork, and an emphasis on color relationships. Both shows present the rectangle as a primary condition of most painting and the dynamic interplay of forms within the rectangle as a drama unfolding. Yet these two shows couldn’t be more different. Seeing one after the other, as I did, was a study of how affect itself, manifested through color choices and paint application, becomes a subject for abstract painting, analogous to but different from a subject for representational painting.