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» Karen Seyffarth
Karen Seyffarth
Associate Professor Emerita of Mathematics and Statistics
Mathematics
Pure Mathematics
+1 (403) 220-6311
Mathematical Sciences 414
kseyffar@ucalgary.ca
Research Interests
Combinatorics and Graph Theory
distinguishing colouring
graph reconfiguration problems
Currently Teaching
Not currently teaching any courses.
view past courses
Publications
Conference Proceedings
Chattopadhyay, S., Higham, L. and Seyffarth, Karen
.
Dynamic and self-stabilizing distributed matching
2002.
Journal Article
Rapke, Tina K. and Seyffarth, Karen
.
"
On nice and injective-nice tournaments
"
. Discrete Math.
341.1 (2018): 1-19. Print.
Seyffarth, Karen, Cavers, Michael S. and White, Ethan P.
.
"
Distinguishing chromatic numbers of complements of Cartesian products of complete graphs
"
. Discrete Mathematics
341.9 (2018): 2431–2441. Print.
Haas, Ruth and Seyffarth, Karen
.
"
Reconfiguring dominating sets in some well-covered and other classes of graphs
"
. Discrete Math.
340.8 (2017): 1802-1817. Print.
Celaya, Marcel, Choo, Kelly, MacGillivray, Gary and Seyffarth, Karen
.
"
Reconfiguring k-colourings of complete bipartite graphs
"
. Kyungpook Math. J.
56.3 (2016): 647-655. Print.
Haas, Ruth and Seyffarth, Karen
.
"
The k-dominating graph
"
. Graphs Combin.
30.3 (2014): 609-617. Print.
Hodgins, Cameron J. and Seyffarth, Karen
.
"
Distinguishing chromatic numbers of wreath products
"
. J. Combin. Math. Combin. Comput.
85. (2013): 299-319. Print.
Nowakowski, Richard J. and Seyffarth, Karen
.
"
Small cycle double covers of products II: categorical and strong products with paths and cycles
"
. Graphs Combin.
25.3 (2009): 385-400. Print.
Laflamme, Claude and Seyffarth, Karen
.
"
Distinguishing chromatic number of bipartite Graphs
"
. Elec. Journal of Combinatorics
16.1 (2009): #R76. Print.
Nowakowski, Richard J. and Seyffarth, Karen
.
"
Small cycle double covers of products I: lexicographic product with paths and cycles
"
. J. Graph Theory
57.2 (2008): 99-123. Print.
Seyffarth, Karen and Wang, Chengde
.
"
On Eulerian and regular perfect path double covers of graphs
"
. Discrete Mathematics
293.1-3 (2005): 237-250. Print.
MacGillivray, G. and Seyffarth, Karen
.
"
Bounds for the independent domination number of graphs and planar graphs
"
. Journal of Combinatorial Mathematics and Combinatorial Computing
49. (2004): 33-55. Print.
Lutscher, Frithjof, McNulty, Jenny, Morris, Joy and Seyffarth, Karen
.
"
Stitching images back together
"
. Congressus Numerantium. A Conference Journal on Numerical Themes
165. (2003): 161-168. Print.
Fish, J. M., Klimmek, R. and Seyffarth, Karen
.
"
Line graphs of complete multipartite graphs have small cycle double covers
"
. Discrete Math.
257.1 (2002): 39-61. Print.
MacGillivray, G. and Seyffarth, Karen
.
"
Classes of line graphs with small cycle double covers
"
. The Australasian Journal of Combinatorics
24. (2001): 91-114. Print.
Hell, P. and Seyffarth, Karen
.
"
Broadcasting in planar graphs
"
. The Australasian Journal of Combinatorics
17. (1998): 309-318. Print.
Fellows, M., Hell, P. and Seyffarth, Karen
.
"
Constructions of large planar networks with given degree and diameter
"
. Networks. An International Journal
32.4 (1998): 275-281. Print.
MacGillivray, G. and Seyffarth, Karen
.
"
Domination numbers of planar graphs
"
. Journal of Graph Theory
22.3 (1996): 213-229. Print.
Fellows, M., Hell, P. and Seyffarth, Karen
.
"
Large planar graphs with given diameter and maximum degree
"
. Discrete Applied Mathematics. Combinatorial Algorithms, Optimization and Computer Science
61.2 (1995): 133-153. Print.
Seyffarth, Karen
.
"
Small cycle double covers of 4-connected planar graphs
"
. Combinatorica
13.4 (1993): 477-482. Print.
Seyffarth, Karen
.
"
Packings and perfect path double covers of maximal planar graphs
"
. Discrete Math.
117.1-3 (1993): 183-195. Print.
Hell, Pavol and Seyffarth, Karen
.
"
Largest planar graphs of diameter two and fixed maximum degree
"
. Graphs Combin.
111.1 (1993): 313-322. Print.
Seyffarth, Karen
.
"
Hajós' conjecture and small cycle double covers of planar graphs
"
. Discrete Math.
101.1-3 (1992): 291-306. Print.
Seyffarth, Karen
.
"
Maximal planar graphs of diameter two
"
. J. Graph Theory
13.5 (1989): 619-648. Print.
Hanson, Denis and Seyffarth, Karen
.
"
Point saturation of graphs
"
. Ars Combinatoria
120. (1985): 147-157. Print.
Hanson, Denis and Seyffarth, Karen
.
"
k-saturated graphs of prescribed maximum degree
"
. Congr. Numer.
42. (1984): 169-182. Print.
Hanson, Denis, Seyffarth, Karen and Weston, J. Harley
.
"
Matchings, Derangements, Rencontres
"
. Math. Mag.
56.4 (1983): 224-229. Print.
Ph.D. Thesis
Seyffarth, Karen
.
Cycle and path covers of graphs
1990.
Courses
Supervised Students
Degrees
PhD
University of Waterloo
, 1990
MMath
University of Waterloo
, 1986
BSc (Hons)
University of Regina
, 1984
Students
Rachel Hardeman Morrill
2016 to Present
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