Up at Columbia’s LeRoy Neiman Gallery MFA student Nora Griffin – well-known already downtown and before her enrollment as a writer on the Brooklyn Rail and an exhibiting artist – has organized and is taking part in a show of quirky, whimsical, often belligerently casual abstraction, “Fool’s House,” closing Friday. The title derives from a painting by Jasper Johns who is a point of reference, perhaps, to various works on display in which language and gesture fuse, as in Griffin’s own “Of Bricks…Who Built it?” a piece that insouciantly wraps itself around a wall, taking its text from a John Ashbery poem. “Fool’s House” brings together two of Ms. Griffin’s fellow MFA students at Columbia, Jim Lee and Becky Brown, who is enamored of Richard Tuttle-like, studiedly scrappy juxtapositions of painted found forms; two early-to-mid-career artists, Peter Gallo, another devotee of rough-hewn textual pieces, and Josephine Halvorson, a master of understated trompe l’oeil precisionism; and the eminence grise of this group, Ron Gorchov, who is represented with a typical saddle-shaped support sporting an iconic pair of amorphic glyphs.