Author: John Robert Martin
Alternate names: Martin, John R; John R. Martin
Bio: John R. Martin, B.A., M.A., Ph.D., is Professor Emeritus in the Department of  Mathematics & Statistics at the University of Saskatchewan, Saskatoon, Saskatchewan, Canada. His research areas are topology, fixed point sets, knot theory, and theory of retracts.

Source: [University of Saskatchewan](https://artsandscience.usask.ca/profile/JMartin#Research)