Recent and upcoming talks by Bill Chen

Bill Chen: A small Dowker space

BIU seminar in Set Theory Speaker: Bill Chen (BGU) There will be two talks: November 27 and December 4. First talk: A small Dowker space, part 1 Abstract. A topological space is said to be “Dowker” if it is normal but its product with the unit interval is not normal. continue reading…

Set Theory, Model Theory and Applications (In memory of Mati Rubin), Eilat, April 22-26, 2018

RESEARCH WORKSHOP OF THE ISRAEL SCIENCE FOUNDATION Set Theory, Model Theory and Applications (In memory of Mati Rubin)   The international conference “Set Theory, Model Theory and Applications,” in memory of our late colleague Mati Rubin, will take place at the Eilat Campus of Ben-Gurion University of the Negev (Israel) from 22 – 26 April, 2018. continue reading…

Bill Chen: Variations of the stick principle

BGU seminar in Logic, Set Theory and Topology Time: Tuesday, June 27th, 12:15-13:30. Place: Seminar room -101, Math building 58. Speaker: Bill Chen (BGU) Title: Variations of the stick principle Abstract: The stick principle asserts that there is a family of infinite subsets of $\omega_1$ of size $\aleph_1$ so that any uncountable subset of $\omega_1$ has some member of the family as a subset. continue reading…

Logic Colloquium 2017, Stockholm, August 14-20, 2017

The Logic Colloquium 2017 (LC2017) is the 2017 Annual European summer meeting of the Association for Symbolic Logic (ASL) and will be held during August 14-20, 2017 at the main campus of Stockholm University. continue reading…

Bill Chen: Tight stationarity and pcf theory – part 2

BGU Seminar in Logic, Set Theory and Topology. Tomorrow we will resume our seminar in Logic, Set Theory and Topology. Time: Tuesday, November 15, 12:30-13:45. Place: Seminar room -101, Math building 58. continue reading…

Bill Chen: Tight stationarity and pcf theory – part 1

BGU Seminar in Logic, Set Theory and Topology. Tomorrow we will resume our seminar in Logic, Set Theory and Topology. Time: Tuesday, November 8th, 12:30-13:45. Place: Seminar room -101, Math building 58. continue reading…

Bill Chen: Can every mutually stationary sequence be tightly stationary?

Mathematical logic seminar – October 27, 2015 Time:     12:30 – 13:30 Room:     Wean Hall 7201 Speaker:         Bill Chen Department of Mathematics UCLA Title:     Can every mutually stationary sequence be tightly stationary? continue reading…

BEST 2015 slides

The 22nd BEST conference was held June 14–17 in San Francisco, CA. Mirna Džamonja – FAC and WQO orders and their ordinal invariants Luke Serafin – Cardinal invariants of generalized continua Ari Brodsky – A microscopic approach to higher Suslin tree constructions Ola Kwiatkowska – Dynamics of the homeomorphism group of the Lelek fan Paul Ellis – The conjugacy problem for countable homogeneous structures Trevor Wilson – Covering properties of derived models Miha Habic – Joint Laver diamonds Bill Chen – Scales in Prikry extensions Rodrigo Dias – Productively countably tight spaces and selective games Steven Clontz – Limited information strategies in infinite games Liljana Babinkostova – The selective strong screen ability game Spencer Unger – Baire measurable paradoxical decompositions via matchings Diana Ojeda-Aristizábal – Finite forms of Gowers’ FINk theorem continue reading…

22nd Boise Extravaganza in Set Theory, June 15-17, 2015

Boise Extravaganza in Set Theory June 15 – 17, 2015 San Francisco State University math.boisestate.edu/~best/ At present plenary speakers for BEST 2015 include: Dr. Rodrigo Dias, University of Sao Paulo, Brazil Dr. continue reading…

Logic in Southern California Caltech, May 10, 2014

LOGIC IN SOUTHERN CALIFORNIA Saturday, May 10, 2014 Rowland Hall 306 Funded by NSF Grant DMS-1044150   Schedule: 2:00 – 3:00  Sherwood Hachtman (UCLA) 3:30 – 4:30  Bill Chen (UCLA) 5:00 – 6:00  Monroe Eskew (UCI)   Abstracts of the talks: Sherwood Hachtman:   The Strength of Borel Determinacy It is a landmark result of Martin that Borel determinacy is a theorem of ZF. continue reading…