Description | Polynomials that preserve nonnegative matrices of a fixed order. Dr. Pietro Paparella In further pursuit of a solution to the celebrated nonnegative inverse eigenvalue problem, in 1978, R. Loewy and D. London posed the problem of characterizing all polynomials that preserve all nonnegative matrices of a fixed order. It is clear that the set of all polynomials that preserve all n-by-n nonnegative matrices contains polynomials with nonnegative coefficients, however, it is known that this set contains polynomials with negative entries. In this talk, novel results are presented concerning the coefficients of the polynomials belonging to this set. The two-by-two case and implications for further research are discussed. This is joint-work with former UWB undergraduate student Benjamin J. Clark (currently in the PhD program in mathematics at Washington State University). References: B. J. Clark and P. Paparella. Polynomials that preserve nonnegative matrices of order two. Mathematics Exchange, to appear. B. J. Clark and P. Paparella. Polynomials that preserve nonnegative matrices. Linear Algebra Appl., 637:110–118, 2022. The Power of Prose: A Case Study of a High Impact Writing Classroom Dr. Julie Shayne In spring 2022 I taught what felt like a fantasy class – “The Power of Feminist Writing.” With funding from the Connected Learning Office I was able to bring in authors from Seattle and beyond to work with my students on the whys and hows of feminist writing. The class was for advanced undergraduates, and high impact for all of us involved; myself and the guests included. This talk is about the origin of the class; the portfolio based assignment; the freedom I gave the students; and the high impact results from all of this. Register for zoom event at: https://washington.zoom.us/meeting/register/tJEtcuuurzwtG9VuiIw0ixyYkwvk1Nifdp6p Husky Highlights is a seminar series meeting several times a quarter to feature UW Bothell faculty and staff who are making advances in research, scholarship and creative practice. These events are often provided virtually and open to the public. Each speaker will present for about 25 minutes with a 10 minute Q&A section afterward. Recordings may be available, depending on speaker preference.For more information on Husky Highlights visit: https://www.uwb.edu/research/research-seminars. |
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