Kate Brock reviews “House and Travels,” paintings by Dona Nelson, Emily Davidson and Zachary Rawe. Though each artist’s painting style and subject matter is distinct, their handling of color and paint reveals their connection: Davidson and Rawe both studied under Nelson at Tyler School of Art, and they all share an interest in breaking down the hidebound categories of “abstraction” and “representation.” Organized by the artists themselves, Kate Brock says this is a “stubborn, delightful group of paintings,” on view at Atelier Art Gallery through April 15th.