Christopher Dwyer Visiting Assistant Professor At Binghamton since 2005 Areas of interest: Algebraic topology Summary of research interests E-mail: dwyer@math.binghamton.edu Phone: (607)-777-2278 Fax: (607)-777-2450

• Office: LN 2235
• Office hours:

  MTW	10:00-11:00
  R	9:00-10:00

• Courses:

• Math 323 - Calc III course webpage
• Math 590T: Topics in Topology - Graduate Topology Seminar, joint with Marco Varisco. This semester, we're talking about Trees by J.P. Serre
  

• Math 330 - Number Systems course webpage
• Math 461 - Topology I course webpage
• Math 590T: Topics in Topology - Graduate Topology Seminar, joint with Marco Varisco
  

Here are some class notes I've compiled. They have punctuation and spelling errors galore, so be warned. If you find any of them, or any problems with the math, please email me.

• Algebraic Topology II - These are the notes for a second semester of graduate algebraic topology. They assume a knowledge of homology and the fundamental group. They cover cohomology, spectral sequences and some other topics. At the present time, they are not yet complete.
• Orbifolds and Equivariant Topology - These are the notes for a graduate topics course on orbifolds and equivariant topology I gave this semester. They were partially compiled by the students, and they need to be completed and filled out.

1. Twisted K-theory for proper actions of discrete groups to appear in K-theory. (.pdf file)
2. Twisted K-theory and completion submitted to Algebraic and Geometric Topology. (.pdf file)
3. When are there enough twisted orbifold vector bundles?, preprint. (.pdf file)
4. Twisted K-theory and the Baum-Connes Conjecture, in preperation with Marco Varisco.
5. An additive decomposition for twisted K-theory, in preperation with Nansen Petryosian.