Loss of Esteemed CWRU Professor Mary Ann Horn Mourned by Local Academic Community

Case Western Reserve University (CWRU) is mourning the loss of Mary Ann Horn, a respected professor in the Department of Mathematics, Applied Mathematics and Statistics. Horn was known for her role in developing mathematical biology as a subdiscipline of applied mathematics in the US. She joined CWRU in July 2017 and was the department chair from 2017 to 2020. Prior to CWRU, Horn was the founding director of the National Science Foundation’s (NSF) Division of Mathematical Sciences and a professor at Vanderbilt University. She also managed the NSF's Mathematical Biology Program.

Horn's work reached beyond CWRU. Lisa Fauci, a math professor at Tulane University, commended Horn's commitment to collaborative research. She mentioned Horn's research on antibiotic-resistant bacteria, which used mathematical modeling. Horn's latest research was on modeling the spread of SARS-CoV-2 infection among hospital and health care workers.

Shigui Ruan, a math professor from the University of Miami, recognized Horn's contributions. He stated that Horn's research impacted both the mathematical biology and medical communities. Horn was also a research mentor with the Association of Women in Mathematics.

Qimin Huang, a former postdoc in mathematics at CWRU and now an assistant professor at the College of Wooster, praised Horn's mentorship. Huang described Horn as a friend and inspiration, whose guidance was crucial to her academic progress. Horn's story of becoming a leading female mathematician inspired Huang early in her career.

Horn was also active in supporting the university. She served on several CWRU committees and was a member of prestigious organizations, including the American Mathematical Society, the Mathematical Association of America, and the Association for Women in Mathematics. She was also a board member of the Society for Industrial and Applied Mathematics. Lee Thompson, interim dean of the College of Arts and Sciences, expressed admiration for Horn, noting her past achievements.

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