Sol Lewitt was the master of grids. Each of his built or painted grids is evidence of a larger system that generated it, a governing equation. In Dike Blair's smallish painting of an empty parking lot, the larger system is the unwritten one that dictates which parts of the world ought to be photographed, and which ought to be painted. Some things are ruined when you photograph them, and others can't survive in paintings, but which are which? "Untitled" is easily mistaken for a photograph, specifically a film still taken from a noir picture. (The show it's in is called Neonoir.) Like Vija Celmins's detailed drawings of night skies, Blair's parking lot lives uncertainly and slightly fantastically. It is a lovingly detailed blank surface, a grid that waits for a system.