152,573 research outputs found
Taking the Conversation from the Class to the Community
David Sumner wants to start a conversation - in the classroom, in the community and virtually anywhere people meet
Induced subgraphs of graphs with large chromatic number. XIII. New brooms
Gy\'arf\'as and Sumner independently conjectured that for every tree , the
class of graphs not containing as an induced subgraph is -bounded,
that is, the chromatic numbers of graphs in this class are bounded above by a
function of their clique numbers. This remains open for general trees , but
has been proved for some particular trees. For , let us say a broom of
length is a tree obtained from a -edge path with ends by adding
some number of leaves adjacent to , and we call its handle. A tree
obtained from brooms of lengths by identifying their handles is a
-multibroom. Kierstead and Penrice proved that every
-multibroom satisfies the Gy\'arf\'as-Sumner conjecture, and
Kierstead and Zhu proved the same for -multibrooms. In this paper
give a common generalization: we prove that every
-multibroom satisfies the Gy\'arf\'as-Sumner conjecture
Book Review: Sex, Sexuality, Law, And (In)Justice
Sex, Sexuality, Law, And (In)Justice, by Henry F. Fradella and Jennifer M. Sumner. New York, NY: Routledge 2016
Exploring Culture, Meaning of Space
Professor David Sumner explained the expanse of the American West to European and Asian students during his Fulbright Lectureship in Germany
Levi Pennington writing to Sumner Mills, October 7, 1946
Levi Pennington writing to Sumner Mills of the American Friends Service Committee about the work he is doing for relief.https://digitalcommons.georgefox.edu/levi_pennington/1102/thumbnail.jp
Dominion, Dressing, Keeping
In this essay, David Sumner uses his experiences rafting on the Colorado River to juxtapose the Biblical notions of dressing and keeping with ethical environmentalism
Levi Pennington Writing to Sumner Mills, October 22, 1946
Levi Pennington writing to Sumner Mills describing some of the tactics he used to get people to donate relief and regretting that he can not do more.https://digitalcommons.georgefox.edu/levi_pennington/1111/thumbnail.jp
Schenectady Community College Faculty Association and Schenectady County Community College
In the matter of the fact-finding between the Schenectady County Community College, employer, and the Schenectady Community College Faculty Association, union. PERB case no. M2010-230. Before: Sumner Shapiro, fact finder
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