In historical and collegiate reports, the suffix "x" (e.g., Class of 1939x) typically indicates a member of that class who left before graduation.
Research on polynomial zero clusters mentions the term in equations such as 3. Gaming and Community Use In historical and collegiate reports, the suffix "x" (e
Many students in the late 1930s left their studies to join the armed forces as World War II approached. In historical and collegiate reports
In some museum or library catalogs, "1939x" is used as a prefix for accessions received in the year 1939. For example, the Johnstown Flood Correspondents Association Records include items donated by Fred J. Heinz under "Acc# 1939x". 2. Mathematical and Scientific Context the suffix "x" (e.g.