Leslie Hogben


Associate Director for Diversity
American Institute of Mathematics
hogben at aimath dot org

Professor of Mathematics
488 Carver Hall
Department of Mathematics
Associate Dean for Graduate Studies and Faculty Development
237 Catt Hall
College of Liberal Arts and Sciences
Iowa State University
Ames, IA 50011


Linear Algebra, Graph Theory, and Applications
American Institute of Mathematics (AIM)
Institute for Mathematics and its Applications (IMA)
Banff International Research Station (BIRS)
American Mathematical Society (AMS)
Association for Women in Mathematics (AWM)  


Inverse Problems and Zero Forcing for Graphs
  • Leslie Hogben, Iowa State University
  • Jephian C.H. Lin, National Sun Yat-Sen University
  • Bryan L. Shader, University of Wyoming
American Mathematical Society, (c) 2022.

Handbook of Linear Algebra

  • Leslie Hogben, Iowa State University, Editor
  • Richard Brualdi, University of Wisconsin (Madison), Associate Editor
  • G. W. Stewart, University of Maryland, Associate Editor

Second Edition

CRC Press, (c) 2014.

  • Leslie Hogben, Iowa State University, Editor
  • Richard Brualdi, University of Wisconsin (Madison), Associate Editor
  • Anne Greenbaum, University of Washington, Associate Editor
  • Roy Mathias, University of Birmingham (England), Associate Editor
CRC Press, (c) 2007.

Recognized as an OUTSTANDING ACADEMIC TITLE by Choice magazine.

Research Trends in Graph Theory and Applications
  • Daniela Ferrero, Texas State University
  • Leslie Hogben, Iowa State University
  • Sandra R. Kingan, Brooklyn College
  • Gretchen Matthews, Virginia Institute of Technology
Springer, (c) 2021.

50 Years of Combinatorics, Graph Theory, and Computing

  • Fan Chung, University of California San Diego
  • Ronald L. Graham, University of California San Diego
  • Frederick Hoffman, Florida Atlantic University
  • Leslie Hogben, Iowa State University and the American Institute of Mathematics
  • Ronald Mullin, University of Waterloo and Florida Atlantic University
  • Douglas West, University of Illinois at Urbana, Champaign
CRC Press, (c) 2020

Recent Trends in Combinatorics (IMA Volume in Mathematics and its Applications)
  • Andrew Beveridge, Macalester College
  • Jerrold R. Griggs, University of South Carolina
  • Leslie Hogben, Iowa State University
  • Gregg Musiker, University of Minnesota
  • Prasad Tetali, Georgia Institute of Technology
Springer, (c) 2016.

Postdocs and Graduate Students

Information about the ISU math & applied math PhD and MS programs
Information about the ISU math & applied math postbaccaluareate certificate program
ISU postdoc positions are advertised on MathJobs

Postdoctoral Associates

Dr. Bryan Curtis                     2021-            RTG postdoc
Dr. Jesse Geneson                  2018-2020    Rand Corp. and Asst. Prof, San Jose State University (on leave)           
Dr. Michael Young                 2010-2014    Assoc. Prof. & Assoc. Dean, Carnegie-Mellon
Dr. Minerva Catral                 2009-2010    Assoc. Prof., Xavier University
Dr. Jason Grout                      2007-2009    Bloomberg (Jupyter Lab)

Ph. D.

Zac Brennan                         current               (joint with David Herzog)
Esther Conrad                       2022 NASA  Propagation processes on graphs and applications            (joint with Kristin Y. Rozier)
Michael Ross                         2022            Propagation processes: full throttling and probabilistic zero forcing
Carolyn Reinhart                   2021  Vis. Asst. Prof., Swarthmore College   The distance matrix and its variants for graphs and digraphs
Beth Bjorkman                      2020   Air Force Research Lab Variations on the power domination problem: Hypergraphs and robustness
Joshua Carlson                     2019   Asst. Prof., Drake University  A method for characterizing graphs with specified throttling numbers
Derek Young                        2019   Asst. Prof., Mt. Holyoke College Techniques for determining equality of the maximum nullity and the zero forcing number of a graph
Michael Dairyko                   2018  Milwaukee Bucks   On exponential domination of graphs   (joint with Michael Young)
Chassidy Bozeman               2018  Asst Prof., Mt. Holyoke College Connections to zero forcing: tree covers and power domination See also
Xavier Martinez-Rivera        2017 Vis. Asst. Prof., Bates College  Principal rank characteristic sequences      
Jephian Chin-Hung Lin        2017  Assoc. Prof., National Sun Yat-Sen U (Taiwan)  Variants of zero forcing and their applications to the minimum rank problem (joint with Steve Butler)  
Kevin Palmowski                 2015   SRC  A fractional approach to minimum rank and zero forcing
Nicole Kingsley                    2015  Lect., Rochester Institute of Technology  Skew propagation time
Brian Lois                            2015  Walmart   Correctness results for on-line robust principal components analysis   (joint with Namrata Vaswani)
Nathan Warnberg                2014  Assoc. Prof., U Wisconsin-LaCrosse  Positive semidefinite propagation time
Craig Erickson                     2014  Amazon  Sign patterns that require eventual exponential nonnegativity
Steven Osborne                   2013   Workiva Cospectral bipartite graphs for the normalized Laplacian  (joint with Steve Butler)
Geoff Tims                           2013   Nationwide Insurance    Haemers' minimum rank (thesis)    Sage program   Output for additional graphs
Travis Peters                        2012  Vis. Asst. Prof., St. Benedict's/St. John's    Positive semidefinite maximum nullity and zero forcing number
Darren Row                          2011  Assoc. Prof., St Mary's University MN  Zero forcing number: results for computation and comparison with other graph parameters
Olga (Pryporova) Kurth       2009   was post-doc at U Connecticut   Types of convergence of matrices
Rana Mikkelson                   2008   was US government    Minimum rank of graphs that allow loops
Amy (Wangsness) Wehe     2005   Professor, Fitchburg State University    The matrix completion problem regarding various classes of P_0,1- matrices  

M. S.
Michael Ross                            2018 (completed PhD at ISU)
AnnaVictoria Ellsworth             2015 Data Analyst, Connance
Xavier Martinez-Rivera            2014 (completed PhD at ISU)
Nicole Kingsley                        2014 (completed PhD at ISU)
Arianne Ross                            2011 was at Coastal Carolina University
Laura (DeLoss) Hogrefe           2009  John Deere
Olga Ruff                                 2007 was in PhD program in Germany
Sandra Nordstrom                   2002
Daniel Carberry                       1995
Rachel Lamp                           1990  Northern Iowa Community College
Joyati (Chakraborty) Debnath  1985  (ISU PhD) Winona State University

M. S. M.
Elizabeth Todd           2018   (joint with E. Stines)
Adam Retzlaff            2017 
   (joint with E. Stines)
Daniel Sarasio Meyer 2008
Joyce Eveland            2006   (joint with Heather Thompson)
Jennifer Parker           2006

Becky Atherton         2005
Lesley Lamphier        2004
Michelle Funcke        2002

Dio Lewis Holl Chair in Applied Mathematics

Education and Outreach

I taught for more than 40 years at ISU but am no longer teaching.  Improving mentoring of graduate students, postdoctoral researchers, and junior faculty is a continuing interest.

Early Career materials

Joining a mathematical research community (with Chris Stevens, AMS Notices August 2019)

3rd Undergraduate Mathematics Courses Forum, Chengdu, China, November 2-4, 2007

Dean Schmittmann presents the award
ISU Mathematics Department wins
2015 American Mathematical Society Award for an Exemplary Program or Achievement in a Mathematics Department


AMS Notices article

Dean Schmittmann presents the award in photo at left

BIRS Focused Research Group 2016 The Inverse Eigenvalue Problem of a Graph

Fall 2014 at Institute for Mathematics and its Applications (IMA)
ISU students and Faculty at IMA
ISU students and faculty at Probabilistic & Extremal Combinatorics Workshop outside Lind Hall (above) and
all participants in Geometric and Enumerative Combinatorics Workshop in Keller Hall (below)

Other Utility links

2024 total solar eclipse at Indianapolis Motor Speedway
April 8, 2024 total solar eclipse as seen from Indianapolis Motor Speedway
stingray St. Croix US Virgin Islands
stingray (above) and turtle (below) St. Croix US Virgin Islands
turtle St John US Virgin Islands

snorkel with stingrays in Bora Bora
manta raymanta ray

Iowa State University seen flying from MSP to DSM 4/7/18. Carver Hall (home of the Math Dept), Lake Laverne, Memorial Union, Hilton Coliseum, CY Stevens Auditorium, Jack Trice Stadium can all be seen (as can many others). 
ISU from the air
Pitons from Delta 339
Landing YYJ


         Leslie@AIM           San Diego Marriott lobby art