# Achievements

### Publications and achievements submitted by our faculty, staff, and students.

Student Dr. Kamila Larripa and students Mathematics

Nine HSU mathematics students participated in the Consortium for Math and its Applications’ (COMAP) annual international math modeling contest Feb. 10. The contest challenges teams of college students to clarify, analyze, and propose solutions to open-ended problems. The HSU students who participated were: Miriam Garai, Michael Malocha, Marika Leitner, Tyler Mobray, Andrew Harter, Molly Shea, Stephanie Corah, Eric Stuck and Paul Mullan. The students came from a variety of math backgrounds, including those who had just completed Calculus to upper division math and physics students. Contest results are available in April.

Submitted: February 12, 2014Faculty Tyler Evans Mathematics

Dr. Tyler Evans and his co-author from ELTE University in Budapest, Hungary published their paper:

Cohomology of Restricted Filiform Lie Algebras ݔʎ»2(p),

Tyler J. Evans and Alice Fialowski, SIGMA 15 (2019), 095, 11 pages. arXiv:1901.07532 https://doi.org/10.3842/SIGMA.2019.095

Faculty Roland Lamberson Mathematics

Rollie Lamberson, emeritus professor of mathematics, is one of several co-authors of the paper, “Developing a Broader Scientific Foundation for River Restoration: Columbia River Food Webs, published in the *Proceedings of the National Academy of Science*. He is also author of “A Brief and Biased Look at Spatial Structure in Ecological Models: A Route to Individual-based Models,” which recently appeared in *Natural Resource Modeling*. And, in January he will be giving an invited address, “Sustainability and the Crisis in World Fisheries,” at the annual joint meeting of the American Mathematical Society and the Mathematical Association of America.

Faculty Peter Goetz Mathematics

Peter Goetz’s paper, “The Koszul property for graded twisted tensor products”, was accepted for publication in the Journal of Algebra in August, 2018. The paper will appear in print in the November 2018 issue. A sciencedirect link is

https://www.sciencedirect.com/science/article/pii/S0021869318304423?via=ihub

Submitted: September 5, 2018Student Ethan Gahtan, Bori Mazzag, Joshua Peterson, Michael Stobb Mathematics

Graduate students Joshua Peterson and Michael Stobb with faculty members Ethan Gahtan and Bori Mazzag published a paper on a graph theoretical model for the posterior lateral line sensorimotor pathway of a zebrafish in PLoS ONE. To the authors’ knowledge, it constitutes the largest and most complete identified neuron connectome model described in any vertebrate.

Submitted: May 7, 2012Student Gabriela Martinez, Jeremy Johnson, Charlotte Olsen, Catie Ledesma, Katie Fasbender, Troy Maloney, Caleb Hill, Alden Bradley, Erik Knutsen, Karlie Elliott, Kylie Reich, and Mario Sanchez Mathematics

The Math Department had twelve students in four teams compete in the International Mathematical Contest in Modeling this January. Teams are challenged to analyze an open applied problem and to propose a solution using mathematical modeling over an intense four-day competition. All four of our teams were recognized by the judges as either Honorable Mention or Successful Participant for their papers.

The students were advised by Dr. Kamila Larripa (Math) and are listed below.

Gabriela Martinez

Jeremy Johnson

Charlotte Olsen

Catie Ledesma

Katie Fasbender

Troy Maloney

(Successful)

Caleb Hill

Alden Bradley

Erik Knutsen

Karlie Elliott

Kylie Reich

Mario Sanchez

Student Jacob Partida Mathematics

2016 Dr. Orval M. Klose Scholarship

This year’s scholarship was awarded to Jacob Partida. The scholarship was established in 2003 and named after HSU Professor of Mathematics, Orval Klose.

Submitted: May 11, 2016Student Caleb Hill, Emily Norberg Mathematics

2016 Robert S. Chambers Mathematics Scholarship

This year’s awardees were Caleb Hill and Emily Norberg.

Submitted: May 11, 2016Student Karlie Elliott Mathematics

2016 Michael Tucker Memorial Scholarship

This year’s Michael Tucker Memorial Scholarship is awarded to Karlie Elliott. The scholarship honors the late son of Marilyn and HSU Mathematics Professor Emeritus, Roy Tucker.

Submitted: May 11, 2016Student Paul George, Gabriela Martinez, Robert Toledo III Mathematics

2016 Travis Jepsen Memorial Scholarship

This year’s Travis Jepsen Memorial Scholarship was awarded to Paul George, Gabriela Martinez and Robert Toledo, III.

Submitted: May 11, 2016Student Leah Eakes, Erik Knutsen Mathematics

2016 Kieval Transfer Scholarship

This year’s Kieval Transfer Scholarship has been awarded to Leah Eakes and Erik Knutsen, both transfer students from College of the Redwoods. This scholarship is for outstanding mathematical performance at a two-year college in preparation for transfer to HSU.

Submitted: May 11, 2016Faculty Ellery Ames Mathematics

Ellery Ames, Lecturer in Mathematics, jointly with co-authors Florian Beyer, (University of Otago, NZ) and Jim Isenberg (Univ. of Oregon) published a paper entitled “Contracting asymptotics of the linearized lapse-scalar field sub-system of the Einstein-scalar field equations” in the Journal of Mathematical Physics. https://doi.org/10.1063/1.5115104

Submitted: October 16, 2019Student Jeremy Johnson, Molly Severdia Mathematics

2016 Kieval Scholarships Awarded

This year’s awardees are Jeremy Johnson and Molly Severdia. This scholarship was established in 1983 by the late Harry Kieval, HSU Mathematics Professor Emeritus. This is awarded to outstanding seniors-to-be mathematics majors.

Submitted: May 11, 2016Student Alden Bradley, Caleb Hill, Cameron Trujillo, Leo Munoz, Karlie Elliott, Matthew Hall, Kamila Larripa Mathematics

Mathematics Students Participate in COMAP. Student teams of Alden Bradley, Caleb Hill, Cameron Trujillo, Leo Munoz, Karlie Elliott and Matthew Hall, with faculty advisor, Kamila Larripa received a designation of Successful Participant in the 2016 Mathematical Contest in Modeling administered by the Consortium for Mathematics and its Applications (COMAP). It challenges teams of students to clarify, analyze, and propose solutions to open-ended problems. The contest attracts diverse students and faculty advisors from over 900 institutions around the world.

Submitted: May 11, 2016Student Charlotte Olsen, Gabriela Martinez, Jeremy Johnson, Kamila Larripa Mathematics

Student team of Charlotte Olsen, Gabriela Martinez, and Jeremy Johnson, with faculty advisor, Kamila Larripa received an Honorable Mention in the 2016 Mathematical Contest in Modeling administered by the Consortium for Mathematics and its Applications (COMAP). It challenges teams of students to clarify, analyze, and propose solutions to open-ended problems. The contest attracts diverse students and faculty advisors from over 900 institutions around the world.

Submitted: May 11, 2016Faculty Peter Goetz Mathematics

Peter Goetz, associate professor of Mathematics, and Andrew Conner, assistant professor of Mathematics at Saint Mary’s College of California, have published a paper titled “Some non-Koszul algebras from rational homotopy theory” in The Bulletin of the London Mathematical Society, an international mathematical research journal.

Submitted: February 17, 2015Faculty Tyler Evans Mathematics

Published, jointly with Alice Fialowski (ELTE, Budapest) a new peer reviewed paper in Linear Algebra and it’s applications. The full text of the article is temporarily available at https://authors.elsevier.com/c/1YFcD5YnCXqL3

Submitted: December 19, 2018Student Kamila Larripa, Miriam Garai, Michael Malocha, Marika Leitner, Tyler Mobray, Andrew Harter, Molly Shea, Stephanie Corah, Eric Stuck, Paul Mullan Mathematics

Three HSU student teams advised by Kamila Larripa were honored for their performance in the Consortium for Mathematics and its Applications Annual Mathematical Contest in Modeling.

More information can be found here: http://www.comap.com/undergraduate/contests/mcm/.

Faculty Kamila Larripa Mathematics

Accepted to American Insitute of Mathematics research program

https://aimath.org/programs/squares/

Faculty Steve Railsback, Matt Johnson Mathematics

Drs. Steve Railsback (Mathematics) and Matt Johnson (Wildlife) collaborated on a paper recently accepted for publication in the “Proceedings of the National Academy of Sciences.” The paper presents a mathematical model on the controversial trade-off between allocating land for crop production versus conservation of biodiversity. Their model shows that, for coffee farmers, growing trees to attract birds not only benefits biodiversity, it also boosts net crop production because birds help control insect pests. The paper will be published next week.

Submitted: April 3, 2014