All 60 paintings by Nozkowski (born 1944) on display are the same size (small), untitled (but coded with a number), abstract, and have been created since 1980. And yet, the American painter says every one of them is based on a definite moment he’s experienced. Indeed, a closer look at the paintings reveals ‘‘pentimenti, abrasions and scarifications’’ that matched the flux of the artist’s emotions. It’s up to the viewer to provide his own interpretation. Left, ‘‘Untitled (8-55), 2003’’ (Private collection).