AMS Student Chapter Seminar: Difference between revisions

From UW-Math Wiki
Jump to navigation Jump to search
Line 25: Line 25:
=== October 23, Erika Pirnes===
=== October 23, Erika Pirnes===


Title: TBD
Title: Number string sequences


Abstract: TBD
Abstract: Starting with some string of digits 0-9, add the adjacent numbers pairwise to obtain a new string. Whenever the sum is 10 or greater, separate its digits. For example, 26621 would become 81283 and then 931011. Repeating this process with different inputs gives varying behavior. In some cases the process terminates (becomes a single digit), or ends up in a loop, like 999, 1818, 999... The length of the strings can also start growing very fast. I'll discuss some data and conjectures about classifying the behavior.


=== October 30, Yunbai Cao===
=== October 30, Yunbai Cao===

Revision as of 19:33, 26 September 2019

The AMS Student Chapter Seminar is an informal, graduate student seminar on a wide range of mathematical topics. Pastries (usually donuts) will be provided.

Everyone is welcome to give a talk. To sign up, please contact one of the organizers with a title and abstract. Talks are 30 minutes long and should avoid assuming significant mathematical background beyond first-year graduate courses.

The schedule of talks from past semesters can be found here.

Fall 2019

October 9, Brandon Boggess

Title: TBD

Abstract: TBD

October 16, Jiaxin Jin

Title: TBD

Abstract: TBD

October 23, Erika Pirnes

Title: Number string sequences

Abstract: Starting with some string of digits 0-9, add the adjacent numbers pairwise to obtain a new string. Whenever the sum is 10 or greater, separate its digits. For example, 26621 would become 81283 and then 931011. Repeating this process with different inputs gives varying behavior. In some cases the process terminates (becomes a single digit), or ends up in a loop, like 999, 1818, 999... The length of the strings can also start growing very fast. I'll discuss some data and conjectures about classifying the behavior.

October 30, Yunbai Cao

Title: TBD

Abstract: TBD

November 6, Tung Nguyen

Title: TBD

Abstract: TBD

November 13, Stephen Davis

Title: TBD

Abstract: TBD

November 20, Yuxi Han

Title: TBD

Abstract: TBD

December 4, Xiaocheng Li

Title: TBD

Abstract: TBD

December 11, TBD

Title: TBD

Abstract: TBD