YNU KPPY 71 July 11, 2015. 11:00am-5:30pm at YNU Schedule 11:00am - 11:50 Allen Herman University of Regina Torsion Units of $\mathbb{Z}S$ 12pm - 1:25 Lunch 1:30 - 2:20 Sang June Lee Duksung Women's University On a phase transition of the random