# Spring 2022 Department Colloquium

### Tuesday 1/11 at 4:00-4:20

Speaker: None

Title: Organizational meeting

Abstract: Please attend or email Nandor Sieben before the meeting if you or your guest would like to give a talk this semester.

### Tuesday 1/18 at 4:00-4:50

Speaker: Steve Wilson

Title: Families of Regular Hypergraphs in Regular Hypermaps

Abstract: The study of which regular (i.e. symmetric) graphs can be the skeleton of a regular map (an embedding into a surface) has a long-ish history. We have theorems saying for which values of $n$ the complete graph $K_n$ is symmetrically embeddable. Ditto for $K_n,n$ and the $n$-dimensional cube.

The generalizations to HYPERgraphs and HYPERmaps are much less familiar. We will examine symmetry in these more general cases, and we will find, after a suitable introduction, that they have an unexpected charm.

### Tuesday 1/25 at 4:00-4:50

Speaker: Christina

Title: The impact of instructional model and instructor rank on our Precalculus course

Abstract: From Fall 2008 to Spring 2019, NAU utilized four different instructional models to deliver its Precalculus course. This descriptive- comparative study utilized students’ final grade in the Precalculus course to understand the effect of the different instructional models on students’ achievement in our Precalculus course and the subsequent mathematics course, Calculus I, in addition to the effect of instructor rank on students’ achievement.

### Tuesday 2/01 at 4:00-4:50

Speaker: Angie Hodge-Zickerman

Title: Living Proof: Lessons learned from Black mathematicians

Abstract: Historically, Black students have been both underrepresented and marginalized in the field of mathematics. The research project I will talk about seeks to understand the stories of Black Americans who have been successful in the field of mathematics. With an understanding of the obstacles each Black mathematician in this study has faced and the tools that have helped them to overcome these hurdles, I will discuss how the findings can help support Black mathematicians and other underrepresented groups in mathematics programs.

### Tuesday 2/08 at 4:00-4:50

Speaker: Eddie Nijholt

Title:

Abstract:

### Tuesday 2/15 at 4:00-4:50

Speaker: Tyler Diggans

Title:

Abstract:

Speaker: Ye Chen

Title:

Abstract:

### Tuesday 3/01 at 4:00-4:50

Speaker: Bahattin Yildiz

Title:

Abstract:

### Tuesday 3/08 at 4:00-4:50

Speaker: Robert Buscaglia

Title:

Abstract:

Speaker:

Title:

Abstract:

### Tuesday 3/29 4:00-4:50

Speaker: Paul Phillips ?

Title:

Abstract:

### Tuesday 4/05 at 4:00-4:50

Speaker: Shafiu Jibrin ?

Title:

Abstract:

### Tuesday 4/12 at 4:00-4:50

Speaker: Jillian and Shaugn ?

Title:

Abstract:

### Tuesday 4/19 at 4:00-4:50

Speaker: Honors week

Title:

Abstract:

### Tuesday 4/26 at 4:00-4:50

Speaker: BSDS capstone presentations

Title:

Abstract: