"Formal rigor" refers to the strict adherence to rules, principles, or standards in a structured and precise manner. It means following a systematic approach with attention to detail and accuracy. Full definition
All the while she has maintained a strict formal rigor, working in lush and provocative color as well as richly toned black and white. (lehmannmaupin.com)
Dominated by new commissions, the transnational show will layer the utopian conceptualism and formal rigor of Mahmoud Bakhshi, Gerard Byrne, and Walid Sadek with more provisional propositions and performances, such as the makeshift accumulations of Shilpa Gupta and Jorge Macchi and the mythic explorations of Philippe Parreno and Olivia Plender. (artforum.com)
Challenging the heritage of his medium through an innovative approach to materiality, technique, and content, Colen pushes the boundaries of painting while imbuing his work with formal rigor and art historical richness. (levygorvy.com)