
In the middle of a hot-hot summer, we have a whole show of cool, cool pictures (both in a literal sense, meaning with the shapes within them mostly carefully-and dispassionately defined, and in a slang sense, that is to say "hip," "with-it" or "the cat's meow" in the slang of other eras). This modestly-scaled but nonetheless ambitious show of 20 paintings by 10 artists is called "Hard-Edged: Geometric Abstraction" and it's at the newest branch of the newish Upsilon Gallery, the branch at 23 East 67th Street (through August13).