Portraiture is about decoding the identity of a sitter and the relationship between sitter and artist. Ruby Sky Stiler’s figure group at the entrance to her current solo show at Nicelle Beauchene Gallery flummoxes familiar, easy-to-read relationships as it positions a petite, female artist as the active member of this assembly. Pared down to silhouettes of spare geometric forms, including a single circular shape that identifies the artist as a woman, the nude figures recall yet crucially differ from Cezanne’s, Renoir’s or Matisse’s bathers and myriad scenes of male artists in their studios with nude female subjects. (On view in Tribeca through Oct 30th. Masks required.)