Description: Zhong-Jin Ruan was assistant professor (1988-93), associate professor (1993-98); and professor (1998-2019) of mathematics at the University of Illinois at Urbana-Champaign (UIUC). Professor Ruan has been an emeritus professor of mathematics at UIUC since 2019. He is best known for his work on operator spaces, operator algebras, Banach Algebra and locally compact quantum groups. In 1986, he discovered a matricial norm characterization for operator spaces.

Professor Ruan's papers include a curriculum vitae, journal publications, teaching materials, academic annual reports (1988-2018), recommendation letters, conferences presentations (including his talks in China), as well as applications for research, grants, tenure, and sabbaticals. Research notes relate to topics in geometry, operator algebras, and measure theory. Papers also include committee files, his records as editor for the *Illinois Journal of Mathematics* (1992 & 2002) as well as his grant applications with the National Science Foundation (NSF, 1988-2012) and the National Natural Science Foundation of China (1999). Publications include *A New Approach to Operator Spaces* (1993), *Complexification of Real Operator spaces *(2003), and *Completely Bounded Multipliers over Locally Compact Quantum Groups *(2010).

Professor Ruan's papers consist of two accessions. The first accession (06/23/2021) contains three series: Series 1, Personal Files and Publications (1990 - ca. 2010) arranged chronologically. Series 2, Subject Files (1979 - 2020) arranged by subheadings; within each subheading materials are arranged chronologically. Series 3, Grant Applications and Research Proposals (1988 - 2020) arranged chronologically

The second accession contains three series: Series 1, Files and Publications (1990- 2012), arranged alphabetically. Series 2, Subject Files (1980s-2016), arranged alphabetically. Series 3, Grant Applications and Research Proposals, (1993-2005), arranged chronologically.