### Student Research Colloquium

**Title**: Student Research**Speaker:**Hope Students**When:**11:00 AM on Tuesday, November 19**Where:**VanderWerf 102

**Abstract:** Hope mathematics students will talk about the research they have been conducting over the past year.

### Joint Mathematics and Computer Science Colloquium

**Title**: Scalable Algorithms and Hybrid Parallelization Strategies for Multivariate Integration with ParAdapt and CUDA**Speaker:**Omofolakunmi (Fola) Olagbemi, Western Michigan University**When:**11:00 AM on Thursday, November 21**Where:**VanderWerf 102

**Abstract**: The evaluation of numerical integrals finds applications in fields such as High Energy Physics, Bayesian Statistics, Stochastic Geometry, Molecular Modeling and Medical Physics. The erratic behavior of some integrands due to singularities, peaks, or ridges in the integration region suggests the need for reliable algorithms and software that not only provide an estimation of the integral with a level of accuracy acceptable to the user, but also perform this task in a timely manner. We developed ParAdapt, a numerical integration software based on a classic global adaptive strategy, which employs Graphical Processing Units (GPUs) in providing integral evaluations. Specifically, ParAdapt applies adaptive region partitioning strategies developed for efficient integration and mapping to GPUs. The resulting methods render the framework of the classic global adaptive scheme suitable for general functions in moderate dimensions, say 10 to 25. The algorithms presented have been determined to be scalable as evidenced by speedup values in the double and triple digits up to very large numbers of subdivisions. An analysis of the various partitioning and parallelization strategies is given.

### MATH Challenge

Hope again had a great turnout of students participating in the Michigan Autumn Take-Home Challenge on Saturday, November 3. Students competed with other students around the state (as well as other states) working in groups on ten interesting problems. This year’s problems included one where cats chased each other inside a regular polygon and another involving flipping coins to complete an NCAA bracket. You can see all of this year’s questions and solutions here.

The following students competed in this year’s MATH Challenge (grouped by team):

- Eleni Persinger, Josiah Peterson, Julion Figueroa
- Ted Eppinga, Evan Maday, Hans Veldman
- Eric Leu, Jack Krebsbach, Emily Dee
- Carolyn Atkinson, Alyssa O’Donohue, Lydia Meinhard
- Kara Dahlenburg, Danielle Reiber
- Matthew McAllister, Seth Almquist, Ivan Vanderkolk
- Hayla Johnson, Reganne Diener
- Kachikwu Nwike, Brandon Fuller, Askaree Crawford

### Flatland: The Film

You are invited to a viewing of *Flatland*, a 2007 computer-generated film by Ladd Ehlinger, on Wednesday, November 13, at 9:00 p.m. in 102 VanderWerf.

The movie is based on a novel of the same name, written in 1884 by Edwin Abbott Abbott. The book is both a satire on Victorian society and an attempt to explain higher dimensions. The movie retains some of those characteristics but adds some modern twists.

You can view a trailer for the film here.

### Problem Solvers of the Fortnight

Congratulations to Tucker Babb, Jeff Bikus, Colin Brown, Griffin Bruso, Caroline Burkhardt, Austin Cortes, Adam Czeranko, Jason Deans, Brett Dyer, Blake Engler, Blake Fuller, Graham Gould, Brennan Hendrikson, Tyler Koran, Jacob Kowalski, Peter Le, Rebekah Ludema, James Mandeville, Cory McGregor, David McHugh, Matthew Nguyen, Kachikwu Nwike, Liam Orndorff, Madelyn Orndorff, Jack Radzville, Eric Salisbury, David Slakes, Shane Vaara, Bethany VanHouten, Nolan Vandegrift, Hans Veldman, Kamaron Wilcox, and William Zywicki — all of whom correctly solved the Problem of the Forntight in the last issue of The Blogosphere’s premiere fortnightly mathematics department news blog.

### Problem of the Fortnight

Alexa has a collection of identical Amazon boxes. She stacks 11 of them, end to end, to form one longer rectangular prism and is surprised when her assistant soothingly yet mechanically informs her that this rectangular prism has three times the surface area as one of the individual boxes. “Three times?!” Alexa exclaims. “Is there an ‘Echo’ in the room?,” her assistant wittily replies. “Okay, assistant,” says Alexa. “How many do I need to join end to end in order to form a rectangular prism with nine times the surface area?”

Write your solution on a cardboard box, and drop it in the Problem of the Fortnight slot outside Professor Mark Pearson’s office, room 212 in The Werf, by 3:00 p.m. on Friday, November 15. As always, be sure to write your name and the name(s) of your math professor(s) — e.g. Ray Diennes, Professor D. Gries — on your solution. Good luck and have fun!