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Physical Sciences and Mathematics Commons

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Full-Text Articles in Physical Sciences and Mathematics

How To Pick Out The Integers In The Rationals: An Application Of Number Theory To Logic, Daniel Flath, Stan Wagon Feb 2008

How To Pick Out The Integers In The Rationals: An Application Of Number Theory To Logic, Daniel Flath, Stan Wagon

Stan Wagon, Retired

No abstract provided.


Linear Algebra By Analogy, Scott H. Hochwald Nov 1991

Linear Algebra By Analogy, Scott H. Hochwald

Scott H. Hochwald

No abstract provided.


Reductions Of Graphs And Spanning Eulerian Subgraphs, Zhi-Hong Chen Dec 1990

Reductions Of Graphs And Spanning Eulerian Subgraphs, Zhi-Hong Chen

Zhi-Hong Chen

This dissertation is primarily focused on conditions for the existence of spanning closed trails in graphs. However, results in my dissertation and the method we used, which was invented by Catlin, are not only useful for finding spanning closed trails in graphs, but also useful to study double cycle cover problems, hamiltonian line graphs problems, and dominating closed trail problems, etc. A graph is called supereulerian if it contains a spanning closed trail. Several, people have worked on the conditions for spanning closed trails having the form "d(u) + d(v) $>$ cn (0 $<$ c $<$ 1)" for all edge …