UNM Alumni and Emeritus Professor Roger Entringer passed away last year. His former PhD student Joseph Barr shared the sad news.
Dr Entringer earned his Ph.D. at the University of New Mexico in 1963 with Dissertation: Some Properties of Certain Sets of Coprime Integers under Joerg Werner von Peter (Kalkschmidt) Mayer. He was Professor Emeritus at the University of New Mexico, having supervised according to the Math Genealogy six students during his time here, Curtis Barefoot, Joseph Barr, Lane Clark, Charles Harner, Joe McCanna, and Tom Porter. However Joe Bar tells us there were at least three other PhD students supervised by Dr. Entringer: Jack Douthett, Pete Steinbach and Doug Jackson.
More information can be found in the Institute of Combinatorics and its Applications webpage.