Nonpositive immersions and counting cycles
Seminar
Speaker
Prof. Daniel Wise (McGill University and Technion)
Date
25/05/2016 - 11:30 - 10:30Add to Calendar
2016-05-25 10:30:00
2016-05-25 11:30:00
Nonpositive immersions and counting cycles
The "nonpositive immersion" property is a condition on a 2-complex X
that generalizes being a surface. When X has this property, its
fundamental group appears to have has some very nice properties which
I will discuss. I will spend the remainder of the talk outlining a
proof that the nonpositive immersion property holds for a 2-complex
obtained by attaching a single 2-cell to a graph. This was proven
recently with Joseph Helfer and also independently by Lars Louder and Henry Wilton.
Third floor seminar room
אוניברסיטת בר-אילן - המחלקה למתמטיקה
mathoffice@math.biu.ac.il
Asia/Jerusalem
public
Place
Third floor seminar room
Abstract
The "nonpositive immersion" property is a condition on a 2-complex X
that generalizes being a surface. When X has this property, its
fundamental group appears to have has some very nice properties which
I will discuss. I will spend the remainder of the talk outlining a
proof that the nonpositive immersion property holds for a 2-complex
obtained by attaching a single 2-cell to a graph. This was proven
recently with Joseph Helfer and also independently by Lars Louder and Henry Wilton.
תאריך עדכון אחרון : 18/05/2016
