Dr. Eric Jonathan Hall
Department of Mathematics & Statistics
College of Arts & Sciences
University of Missouri  Kansas City
206 Haag Hall, 5100 Rockhill Rd. Kansas City, MO 64110
Office: Manheim 306B (map)
Phone: 8162355852
Email: halle@umkc.edu
Fall 2014 Office Hours
Mon 3:45 5:15
Tues 10:4512:00
Thurs 4:45 6:15
(or other times by appointment)
Fall 2014 teaching:
 Math 250 (Calculus III), MW 5:307:20
I am the Interim Department Chair for Mathematics & Statistics
for the Fall 2014 semester.
I am the Math & Stat Departmental Advisor for
freshmen/sophomore math majors and minors.
(The junior/senior math advisor is
Majid BaniYaghoub.)
If you are a math major but haven't me or Majid, please make
an appointment or stop by! If you are thinking of becoming a math major
or math minor, please visit either one of us.
In my role as advisor, I'm especially useful for
questions pertaining to the Math/Stat Department classes and
undergraduate programs (though I also enjoy talking about
other things). The principal graduate advisor is
Liana Sega.
For advising on nonmath courses and general requirements for the BA or BS
degrees, you may also find the
College of Arts & Sciences
Advising Office to be helpful.
I have been a member of the mathematics faculty
at UMKC since August 2003.
Some prior associations:
Maybe some of you know me from my three years as
a professor at Purdue University, or my five years
as a graduate student at the University of Michigan,
or my twentyfour years attending to various
matters in the state of Minnesota (I've lived in Minneapolis,
Northfield, and Edina, and I worked at Unisys in Roseville for
a couple years).
During Fall 2011, I was visiting the University of the Aegean
in the town of Karlovasi.
Research Papers in Set Theory. Titles which
are links are links to PDF files.
 Characterizing permutation models 
 Other 

The existence of free ultrafilters on ω does not imply the
extension of filters on ω to ultrafilters
(with K. Keremedis and E. Tachtsis),
Math. Logic Quarterly 59(3), 2013.

Partial choice functions for families of finite sets
(with S. Shelah),
Fundamenta Mathematicae 220, 2013.

On BPI restricted to Boolean algebras of size continuum
(with K. Keremedis),
Bull. Pol. Acad. Sci., Math. 61(1), 2013.

ČechStone compactifications of discrete spaces in ZF and
some weak forms of the Boolean prime ideal theorem
(with K. Keremedis),
Topology Proceedings 41, 2012.

Unions and the axiom of choice
(with O. De la Cruz, P. Howard, K. Keremedis, and J. Rubin),
Math. Logic Quarterly 54, 2008.

Definitions of finiteness based on order properties
(with O. De la Cruz and D. Dzhafarov),
Fundamenta Mathematicae 198, 2006.

Properties of the real line and weak forms of the axiom of choice
(with O. De la Cruz, P. Howard, K. Keremedis, and E. Tachtsis),
Math. Logic Quarterly 51(6), 2005.

Metric spaces and the axiom of choice
(with O. De la Cruz, P. Howard, K. Keremedis, and J. Rubin),
Math. Logic Quarterly 49(5), 2003.

Products of compact spaces and the axiom of choice II
(with O. De la Cruz, P. Howard, K. Keremedis, and J. Rubin),
Math. Logic Quarterly 49(1), 2003.

Products of compact spaces and the axiom of choice
(with O. De la Cruz, P. Howard, K. Keremedis, and J. Rubin),
Math. Logic Quarterly 48(4), 2002.

Definitions of compactness and the axiom of choice
(with O. De la Cruz, P. Howard, J. Rubin, and A. Stanley),
J. Symbolic Logic 67(1), 2002.
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