Robert Ryman: 1961–1964 is a valentine. It follows a tightly focused 2022 hang of eight paintings, Ryman’s last, uptown (this latter exhibition was the artist’s first show at Zwirner, which announced representation of his estate in 2021), and coincides with a presentation of drawings in London. Curated by Dieter Schwarz, the Chelsea installation, as framed in the press materials, focuses on “a critical moment in Ryman’s development,” which “elucidate[s] many of the fundamental ideas that he would continue to explore throughout his prolific sixty-year career.”