Department Chair
Scott Kaschner
Scott Kaschner
Associate Professor – Mathematics

For more information, please see my website:

https://blue.butler.edu/~skaschne/

View CV

Faculty & Staff
Jenny Cox
Jenny Cox
Lecturer, Mathematics

Jenny Cox is a Lecturer in the Mathematics, Statistics, and Actuarial Science Department at Butler University. She has a passion for teaching students mathematics, working as a mathematics teacher at both the high school and collegiate levels for 17years. Prior to joining the Butler faculty, Jenny was a mathematics teacher at Herron High School and then University High School. She has also worked in both the Mathematics and Mathematics Education departments at Indiana University. 

Jenny received her Bachelor of Arts in Mathematics from the University of Southern Indiana in2005, her Masters of Arts in Mathematics from Indiana University in 2007, and Doctorate in Curriculum and Instruction – Mathematics Education at Indiana University in 2022. Her current research is focused on reducing mathematics anxiety. Her research interests also include equitable practices surrounding high-stakes assessments and supporting girls in STEM.

Jenny lives in Franklin with her husband Ryan and three children. When she is not teaching mathematics, she enjoys running, reading at all hours, and cheering on her children in their various sporting events. 

Awards and Fellowships

  • Neatrour-McGlasson Fellowship, Indiana University
  • Faculty Fellowship, Indiana University
  • Inaugural Audrey Lupton Community Award, University High School
  • Rothrock Teaching Award for Associate Instructors, Indiana University

Publications

Cox, J. (2022). Compliance, competitiveness, and confidence: Investigating patterns in mathematics anxiety using a nuanced view of gender. [Doctoral dissertation, Indiana University]. https://www.proquest.com/docview/2691763880

Burch, L., Tillema, E., Cox, J., Yavuz, S., & Sianturi, I. (2021). Productive mathematical meanings as a guide to analyzing algebra textbooks.In Olanoff, D., Johnson, K., & Spitzer, S.M. (Eds). In Productive Struggle: Persevering Through Challenges: Proceedings of the 43rd Meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education, Philadelphia. http://www.pmena.org/pmenaproceedings/PMENA43 2021 Proceedings.pdf

Cox, J. & Jacobson, E. (2020). Mathematics anxiety as a mediator for gender differences in 2012 PISA mathematics scores. In Sacristán, A. & Cortés, J., (Eds.). Mathematics Education Across Cultures: Proceedings of the 42nd Meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education, México. Cinvestav / AMIUTEM / PME-NA. doi.org/10.51272/pmena.42.2020

Cox, J. (2019). A focus on factoring: Taking the difficulty out of Algebra students’ least favorite topic, Indiana Mathematics Teacher, Indiana Council of Teachers of Mathematics (ICTM), 18-21.

Presentations

Cox, J. (2020, April 28 & May 6). My summer SAT study: Common misconceptions and misgivings from our students [Webinar].  

Cox, J. (2020, April). Key connections between mathematics curriculum and the SAT. Presentation. Presentation at the Centennial National Council of Teachers of Mathematics (NCTM) National Conference, Chicago, Illinois. (Conference canceled)

Cox, J. (2020, March 16, 18, & 20). Engaging mathematics students at a level of high cognitive demand, even in E-Learning environments [Three-part webinar series]. ICTM Members Helping Members. The Indiana Council of Teachers of Mathematics. 

Cox, J. (2020, March 6). Rigorous work in the best courses: The use of the SAT as a graduation requirement and implications for underserved students. Presentation at the Indiana Mathematics Educators Research Symposium (IMERS), Indianapolis, Indiana. 

Cox, J. (2019, October 29). Building connections and breaking down rules in the Precalculus classroom. Presentation at the Indiana Council of Teachers of Mathematics (ICTM) Conference, Indianapolis, Indiana.

Cox, J. (2019, March 1). Queries in quadratic equations: Historical and curricular developments. Presentation at the Curriculum and Instruction Research and Creative Activities Symposium (CIRCAS), Bloomington, Indiana.  

Cox, J. (2019, February 15). Queries in quadratic equations: Historical and curricular developments. Presentation at the Indiana Mathematics Education Research Symposium (IMERS), Indianapolis, Indiana.  

Cox, J. (2017, November 10). Educational games and activities for the mathematics classroom. Presentation at the Independent School Association of the Central States (ISACS) Conference, Chicago, Illinois.

Memberships and Affiliations

  • National Council of Teachers of Mathematics
  • Indiana Council of Teachers of Mathematics
  • Hoosier Association of Mathematics Teacher Educators
  • American Educational Research Association
  • Psychology of Mathematics Education – North America
  • Association of Mathematics Teacher Educators

Rena Duerksen
Rena Duerksen
Administrative Specialist – Mathematics
Lacey Echols
Lacey Echols

B.A. University of Texas at Austin

M.A.T. Duke University

Post-graduate courses in physics and statistics

Courses taught at Butler:

AR 210-MA Statistically Speaking
MA 101 College Algebra
MA 103 Elementary Statistics
MA 104 Contemporary Mathematics
MA 125 Business Calculus
MA 107 Calculus 2
MA 162 Statistical Methods
MA 360 Probability Theory
MBA 403 Statistics

I created a new core class AR 210-MA Statistically Speaking for non-mathematics majors who need a math course to fulfill core requirements and have been teaching this for 5 years.  Students majoring in the natural and social sciences are often interested in the course for later work required in their major/  

My life is Butler (Go Dawgs!), my children and grandchildren, playing golf, volunteering for community work, and reading. I also play the piano at church, but just for fun!  

I serve on the board of Family Promise of Greater Indianapolis, a non-profit for homeless children and their families.  My major board duty is to organize the Home Sweet Home event each fall, an event which raises approximately $21,000 through the sale of gourmet desserts.  Last year we were able to raise over $61,500  that evening.

I am a true Texan who has fallen in love with Butler and living in Indianapolis.  I feel like I have won the lottery to work at such a great institution and work with such wonderful faculty and exciting students!

Dennis Eckert
Dennis Eckert
Adjunct – LAS Math


Has taught college courses for IUPUI, Butler, Ivy Tech, DeVry, and Chamberlain School of Nursing…2015 winner of IUPUI Associate Faculty Teacher of the Year Award…Has taught various IUPUI math classes since Fall 1977…. ..Retired from IPS in 2010…taught 14 years at Northwest High School….taught statistics, microeconomics, and mathematics for 8 years at Fort Ben Harrison…also taught 6th & 7th grade math for Guion Creek MS…taught 8th grade math for Belzer MS….also taught at Washington HS and Center Grove HS….Life License Math grades 7-12 Indiana

Kathie Freed
Kathie Freed
Adjunct – LAS Math

Professor Freed received her B.A. and M.S. from Butler University. She spent the first 34 years of her career teaching high school mathematics, most recently at Carmel High School in Carmel, Indiana. She began teaching at Butler in 2010 and as a full time instructor specializes in teaching undergraduate courses including Calculus I, II and III, Precalculus, and  Business Calculus.

Richard Hall
Adjunct – LAS Math
John Herr
John Herr
Lecturer, Mathematics

B.S., Mth., Creighton University, 2011
Ph.D., Iowa State University, 2016

Karen Holmes
Karen Holmes
Senior Lecturer – Mathematics

Education

B.A. in Mathematics at St. Olaf College 1992

M.S. in Mathematics at University of North Carolina at Chapel Hill 1995

Ph.D. in Mathematics at North Carolina State University 1999  Finite Dimensional Nilpotent Lie Algebras with Isomorphic Maximal Subalgebras.   Advisor: Dr. E.L. Stitzinger


Teaching Experience

Butler University 2006-present 

IUPUI at satellite campus in Carmel 2002-2006

NC State as a T.A. 1998-1999

Louisburg College in Louisburg, NC 1995-1998

UNC Chapel Hill as a T.A. 1993-1995


Rasitha Jayasekare
Rasitha Jayasekare
Associate Professor – Statistics and Actuarial Science

Dr. Rasitha Jayasekare is the Director of Statistics and Actuarial Science and an Associate Professor in the Department of Mathematics, Statistics, and Actuarial Science. Her research interests are statistics, data mining, operations research, and community based learning in statistics. Dr. Jayasekare teaches courses in Statistics, Actuarial Science and Data Science at Butler. In addition, provides statistical consultancy for faculty and students on campus. 

Dr. Jayasekare is a recipient of the Faculty All-Star Recognition Award in 2021 for her service to the university including her contribution to developing Statistics major, Data Science minor, and the Master of Data Analytics program, co-authoring with faculty colleagues across the university in their research, and statistical consultancy on campus. She is also the recipient of the College of Liberal Arts and Sciences Outstanding Faculty Award for Excellence in Teaching in 2020.

She earned BSc in Applied Sciences from Rajarata University of Sri Lanka (2004), MSc in Industrial Mathematics from University of Sri Jayewardenepura Sri Lanka (2008), MA in Mathematics from University of Louisville (2011) and PhD in Industrial and Applied Mathematics from University of Louisville (2013).

Prior to Butler Dr. Jayasekare has taught at Centre College (Danville, KY), University of Louisville (KY), Asia Pacific Institute of Information Technology (APIIT – Sri Lanka) and Rajarata University of Sri Lanka. 



Courses taught at Butler:

Predictive Analytics & Data Mining, Introduction to Data Science, Advanced Statistical Computing, Loss Models, Linear Regression and Time Series (Applied Statistical Methods), Nonparametric Statistics, Multivariate Statistical Methods, Financial Mathematics, Statistical Theory, Elementary Statistics, Pre-Calculus, Business Calculus.

Introduction to Data Mining (graduate course)



Publications:

  • Lynne A. Kvapil, Mark W. Kimpel, Rasitha R. Jayasekare, Kim Shelton, Using Gaussian mixture model clustering to explore morphology and standardized production of ceramic vessels: A case study of pottery from Late Bronze Age Greece, Journal of Archaeological Science: Reports, (2022), https://doi.org/10.1016/j.jasrep.2022.103543
  • Arora, P., Johnson, A., Jayasekare, R. et al. Association between marijuana use and nonmedical prescription opioid use in the United States: are we shifting from one epidemic to another?. J Public Health Policy (2021). https://doi.org/10.1057/s41271-021-00282-1 
  • Crawford, Novak, and Jayasekare, Volunteerism, Alcohol Beliefs, and First-Year College Students’ Drinking Behaviors: Implications for Prevention, The journal of Primary Prevention 40.4 (2019): 429-448. 
  • Mellis B, Soto P, Bruce CD, Lacueva G, Wilson AM, Jayasekare R (2018) Factors affecting the number and type of student research products for chemistry and physics students at primarily undergraduate institutions: A case study. PLoSONE 13(4): e0196338.
  • Jayasekare RR, Gill R, Lee, K. Modeling Discrete Stock Price Changes using a Mixture of Poisson Distributions, Journal of the Korean Statistical Society, (2016) 45.3, 409-421



Grants Experience:

  • Collaborator in the NSF grant for Nonlinear Biochemistry of Transcriptional Activation Domains”, applied by Alex Erkine of College of Pharmacy & Health Sciences– Butler University, funded with $711,000 from 2019-2022.
  • Faculty Associate in the NSF grant on “Cultivating Scientific Literacy and Action through Place: Using a Campus Farm as an Interdisciplinary Learning Hub” submitted by Julia Angstmann of Center for Urban Ecology & Sustainability – Butler University, funded with $296,377 from 2016-2019.
  • Project Manager of "Tehnopreneur Incubation Center" (TIC) at Asia Pacific Institute of Information Technology (APIIT) – Sri Lanka. TIC is a project under Improving Relevance and Quality of Undergraduate Education, funded by the World Bank. (2007-2009).

William Johnston
William Johnston
Professor – Mathematics & Actuarial Science

"Dr. J." has taught mathematics to undergraduates for more than 35 years. He also served for 17 years in administrative posts ranging from department chair, associate dean, and academic affairs vice president at various institutions. The pinnacle of this work was from June 2011 to January 2018 as chair of Butler University’s Department of Mathematics, Statistics, and Actuarial Science, which culminated in the Liberal Arts and Sciences award for outstanding faculty member in service to the College.  In this role he led the department into a host of improvements, including a more than doubling in student majors, an addition of a statistics major, and an establishment of a unique summer Mathematics Research Camp (MRC). The MRC is offered to any Butler department major to experience one-on-one research work in mathematics with department faculty members. He has developed and implemented new courses into the undergraduate curriculum at several institutions. They include: Integration Theory, which teaches the Lebesgue Integral to undergraduates; Foundations of Mathematics, which teaches how to prove mathematical theorems, much like an art course might teach how to paint; the FYS course Elementary, my Dear Watson, which looks at characters such as Sherlock Holmes in literature, drama, and film who illustrate the use of deductive and inductive reasoning; and Decision Making, which shows how many different disciplines — such as mathematics, economics, ethics, and English literature — can influence the way people make decisions.  His third textbook in mathematics, on the Lebesgue Integral, was published by the highly acclaimed MAA Press in fall 2015. His fourth book, on complex variables, is also published by the MAA Press and is newly available at the AMS Bookstore site https://bookstore.ams.org/cdn-1645193668088/text-71/ . It introduces complex analysis as a natural extension of the calculus of real-valued functions. A complimentary Teacher’s Guide and the full Solutions Manual are available at that website for faculty members’ review and upon adoption.   

Areas of Expertise

The Theory of Functions; in particular, Lebesgue Integration, Operator Theory, and Complex Functions


Education/Degrees

Ph.D. University of Virginia, 1988. B.S. Wake Forest University, 1982


Select Publications:

Books (* Signifies publication after peer review; ** after editor review):

Johnston, W., The Calculus of Complex Functions, MAA Press: An Imprint of the AMS, Washington, DC, 2022. ISBN 978-1-4704-6565-0*

Johnston, W., The Lebesgue Integral for Undergraduates, MAA Press: An Imprint of the AMS, Washington, DC, 2015. ISBN 978-1-93951-207-9.*

Johnston, W., and McAllister, A., A Transition to Advanced Mathematics: A Survey Course, Oxford University Press, New York, 2009. ISBN978-0-19-531076-4.*

4. Johnston, W., An Introduction to Statistical Inference, Mohican Publishing Co., February 2001. ISBN 0-923231-40-4.*

5. Johnston, W. and Perry, J., Solution Manual to Accompany An Introduction to Statistical Inference, Mohican Publishing Co., February 2001. ISBN 0-923231-41-2.**

Articles 6. Johnston, W., Makdad, C., A Comparison of Norms: Bicomplex Root and Ratio Tests and an Extension Theorem, The American Mathematical Monthly, 128:6, 525-533, 2021.*

7. Cowen, C., Johnston, W., Wahl, R., Constructing Invariant Subspaces as Kernels of Commuting Matrices, Linear Algebra and its Applications, 583:15, (December 2019): 46-62.* 

8. Johnston, W., Webster, J., and Wilson, C., An introductory research experience in mathematics for undergraduates, PRIMUS, 27 4-5, pp. 451-460, 2017.*

9. Johnston, W., The weighted Hermite polynomials form a basis for L2(R), The American Mathematical Monthly, 121(3),(March 2014):249-253.*

10. Johnston, W. and McAllister, A., A survey transition course, PRIMUS: Problems, Resources, and Issues in Mathematics Undergraduate Studies, 22:1,(January 2012): 30-42.*

11. Johnston, W., McAllister, A.; Wilson, J., An experiment that worked: revising the calculus curriculum, Focus, XXI, No. 8 (November 2001): 8-9.**

12. Johnston, W., Hall, A., Reducing litigation: the mathematics of settling out of court, PRIMUS,VIII, No. 1 (March 1998): 93-96.*

13.McMahan, T. and Surrey, M. (student publication) with Johnston, W., A statistical analysis of baseball’s 1987 home run phenomenon, Pi Mu Epsilon Journal 10, No. 4 (Spring 1996) 300-304.*

14. Johnston, W. and Wilson, J., Optimization using computer software and algebra, The Proceedings of the Fifth ICTCM – Technology in Collegiate Mathematics, Addison-Wesley, Chicago, Illinois (1994): 602-608.***

15. Allen, J. (student publication) with Johnston, W., Winning blackjack strategies, Undergraduate Journal of Mathematics 23, No. 2 (September 1991) 31-35.*

16.Johnston, W., A condition for absence of singular spectrum with an application to perturbations of self-adjoint Toeplitz operators, American Journal of Mathematics, 113 (1991): 243-267. *

Fillers 17. Farrell, J. and Johnston, W., A mathematics crossword puzzle: mathematical evolution, The American Mathematical Monthly, 124:5 (May 2017): 444-445. DOI: 10.4169/amer.math.monthly.124.5.479*

Mary Krohn
Mary Krohn
Senior Lecturer – Mathematics
Duane Leatherman
Duane Leatherman
Associate Professor – Mathematics & Actuarial Science
Mohammad Patwary
Mohammad Patwary
Assistant Professor – Statistics

Dr. Mohammad Shaha A. Patwary is an Assistant Professor in the Department of Mathematics, Statistics, and Actuarial Science at Butler University. Before completing his M.S. degree in Applied Statistics from Minnesota State University, Mankato, Dr. Patwary completed his Bachelor of Science and M.S. degree from the University of Chittagong, Bangladesh. He received his Ph.D. in Statistics from the University of Texas at Dallas. Dr. Patwary’s research interests focus on but are not limited to inferential statistics, statistical modeling, applied statistics, and P-reduction in big data. Dr. Patwary also likes mentoring students and offering statistical consultation to faculties. He also has a background in collaborative research.   

Before joining Butler, he was actively engaged with teaching and research at the University of Texas at Dallas, Minnesota State University-Mankato, University of Chittagong (Bangladesh), Bangladesh University of Professionals, Bangladesh University of Business and Technology. 

Since his joining at Butler, Dr. Patwary taught Nonparametric Statistical Methods, Design of Experiments, and Elementary Statistics courses. 

Amber Russell
Amber Russell
Associate Professor – Mathematics
Prem Sharma
Prem Sharma
Emeritus Faculty
Jeanne Valentin
Jeanne Valentin
Rebecca Wahl
Rebecca Wahl
Associate Professor – Mathematics

I grew up in Salem, Oregon and earned my BS in Mathematics from the University of Oregon. I completed my MS at San Jose State University and earned my Ph.D. in Mathematics from Purdue University in 1997. After three years as an Assistant Professor at University of South Dakota, I came to Butler University in 2000 and have loved being here ever since.

My research area is in Operator Theory and I focus on studying Composition Operators. This very challenging area of research is fun because I get to employ techniques and ideas from Complex Functions, Functional Analysis and Operator Theory. I have led student projects in this area as well as Linear Algebra and welcome all interested students to work with me!

View CV

Jonathan Webster
Jonathan Webster
Associate Professor – Mathematics and Actuarial Science
Chris Wilson
Chris Wilson

Chris Wilson is an Associate Professor in the Department of Mathematics and Actuarial Science. His research interests include noncommutative algebra and actuarial science education.  Dr. Wilson holds a bachelor’s degree in music education and MA and Ph.D. degrees in mathematics, all from Indiana University Bloomington.