Recent and upcoming talks by Harry Altman

Harry Altman: Lower sets in products of well-ordered sets and related WPOs

Thursday, May 24, 2018, from 4 to 5:30pm East Hall, room 4096 Speaker: Harry Altman (University of Michigan) Title: Lower sets in products of well-ordered sets and related WPOs Abstract: Following last week’s talk on maximum order types of well partial orders, we’ll compute the maximum order type of the set of bounded lower sets in N^m, as well as generalizations to finite products of other well-ordered sets, and discuss the maximum order types of some other related well partial orders also. continue reading…

Harry Altman: Well partial orderings and their maximum extending ordinals

Thursday, May 17, 2018, from 4 to 5:30pm East Hall, room 4096 Speaker: Harry Altman (University of Michigan) Title: Well partial orderings and their maximum extending ordinals Abstract: A well partial order is a partial order all of whose extensions to a total order are well-orders. continue reading…