Department of Math & CS

Joy Morris BSc., Trent University PhD, Simon Fraser University Associate Professor

Address:

Joy Morris Department of Mathematics & Computer Science University of Lethbridge 4401 University Drive Lethbridge, AB CANADA     T1K 3M4

Phone: (403) 332-4100 Fax: (403) 317-2882 Office: C536 E-mail: joy@cs.uleth.ca

Teaching Activities

Fall 2012
	Math 3400, Section A
	Math 3860, Section A

Research Activities

My research interests are in Combinatorics, in particular Algebraic Graph Theory (Cayley Graphs). I have published several papers. These include the papers available for download below in .pdf format. Many of the papers below represent joint work, as indicated in the authorship.
Connectivity of Cayley Graphs: A Special Family (Appeared in JCMCC, 1996)
Isomorphic Cayley Graphs on different Groups (Appeared in Congressus Numerantium, 1996)
Automorphism groups with Cyclic Commutator Subgroups and Hamilton Cycles (With E. Dobson, H. Gavlas and D. Witte. Appeared in Discrete Math., 1998)
Self-complementary Circulant Graphs (With B. Alspach and V. Vilfred. Appeared in Ars Combinatoria, 1999)
Isomorphic Cayley Graphs on Nonisomorphic Groups (Appeared in JGT, 1999)
Classifying Arc-Transitive Circulants of Squarefree Order (With C. H. Li and D. Marusic. Appeared in JACO, 2001)
Toida's Conjecture is True (With E. Dobson. Appeared in Electronic J. of Combin., 2002)
Results towards showing Z_p^n is a CI-group (Appeared in Congressus Numerantium, 2002)
Stitching Images Back Together (With F. Lutscher, J. McNulty, and K. Seyffarth. Appeared in Congressus Numerantium, 2003)
Flows that are sums of hamiltonian cycles in Cayley graphs on abelian groups (With D. Morris and D. Moulton. Appeared in Discrete Math., 2005)
On automorphism groups of circulant digraphs of square-free order (With E. Dobson. Appeared in Discrete Math., 2005)
Normal circulant graphs with noncyclic regular subgroups (With D. Marusic. Appeared in JGT, 2005)
Brian Alspach and his work (With M. Sajna. Appeared in Discrete Math., 2005)
Automorphism groups of circulant graphs - a survey (Appeared in Graph Theory, Trends in Math., Birkhauser, 2006)
Cyclic hamiltonian cycle systems of the complete graph minus a 1-factor (With H. Jordon. Appeared in Discrete Math., 2008)
Automorphism groups of wreath product digraphs (With E. Dobson. Appeared in Electronic J. of Combin., 2009)
Directed cyclic hamiltonian cycle systems of the complete symmetric digraph (With H. Jordon. Appeared in Discrete Math., 2009)
Hamiltonian cycles in (2,3,c)-circulant digraphs (With D. Morris and K. Webb. Appeared in Discrete Math., 2009)
Strongly regular edge-transitive graphs (With C. Praeger and P. Spiga. Appeared in Ars Mathematica Contemporanea, 2009)
Balanced Cayley graphs and balanced planar graphs (With P. Spiga and K. Webb. Appeared in Discrete Math., 2010)
Hamiltonian cycles in Cayley graphs whose order has few prime factors (With K. Kutnar, D. Marusic, D. Morris and P. Sparl. Appeared in Ars Mathematica Contemporanea, 2012.)
Cayley graphs of order 16p are hamiltonian (With S. Curran and D. Morris. Appeared in Ars Mathematica Contemporanea, 2012.)
Generalised quadrangles with a group of automorphisms acting primitively on points and lines (With J. Bamberg, M. Giudici, G. Royle and P. Spiga. Appeared in J. Combin. Theory - A, 2012.)
Quotients of CI-groups are CI-groups (With E. Dobson. Submitted to Electronic J. Combin., 2012.)
Asymptotic automorphism groups of circulant graphs and digraphs (With E. Dobson. Submitted to Ars Math. Comtemp., 2012.)
2-distance-transitive digraphs preserving a cartesian decomposition (With P. Spiga. Submitted to J. of Alg. Comb., 2012.)
Automorphisms of circulants that respect partitions (Submitted to J. Graph Theory, 2012.)

(Note: Dates inside the above files represent the dates on which I converted them to .pdf form, and may bear no relation to their publication dates.)

I married Dave Morris in December of 2002. Here is a wedding photo.