Ms. Lozano was a quixotic, confounding rebel whose decadelong New York career seemed always to involve pushing one limit or another. Her early paintings, executed in an Expressionistic cartoon style, confronted issues of sexual and painterly decorum. They featured a robust messiness, distorted close-ups of the body, intimations of violence and suggestively exaggerated images of tools.

By 1967 she had taken the systemic approach of Minimalism, making nearly monochromatic ''Wave'' paintings based on wavelengths that pushed the limits of visual perception. In the mid-1960's she also began to execute a series of life-related actions (she didn't like the word performance) that tested, among other things, her stamina, her friends' patience and the conduct of everyday life. These works reflected her friendship with Conceptually inclined artists like Sol LeWitt, Hollis Frampton, Dan Graham and Carl Andre. They also reflected an increasing disenchantment with the art world that bordered on hostility.

*Roberta Smith, The NY Times