Objects On My Dresser, Phase 11: Isomorphics consists of three photocopy collage series, A Calculation of the Remainder, Chelate, and Surface, which apply the analytic methodology Rapoport had developed to topical interests including physics, chemistry, current events, and art theory. These were presented in a variety of formats, including as wall-hanging scrolls and artist’s books.

An isomorphism is a mathematical term that describes a mapping between two sets that preserves a one-to-one relationship between the elements of the sets.

A Calculation of the Remainder (1980-81) combines Objects On My Dresser images with printouts of mathematical calculations, artworks by Rapoport’s friend, the artist Harold Paris, and newspaper stories about the 1980 murder of Rapoport’s neighbor, Mark Walsh.

Chelate (1981) is a photocopy collage that uses diagrams appropriated from Rapoport’s mentor Erle Loran’s book Cezanne’s Compositions (1947); research about chelation, which is used to treat radiation sickness; and images of the objects on her dresser.

In Surface (1981-87), Rapoport merged scientific illustrations of surface chemistry with images from Objects On My Dresser.

Presented as a large wall installation, Rapoport colored the photocopy collage with Prismacolor and made use of multiple layers of transparent acetate. It was presented with an audio piece that correlated Rapoport’s discussions about the objects on her dresser with her research into surface chemistry. It was also published as an artist’s book in 1987.