A recursive theorem on matching extension

نویسندگان

  • Chi-i Chan
  • Tsuyoshi Nishimura
چکیده

A graph G having a perfect matching (or I-factor) is called n-fextendable if every matching of size n is extended to a I-factor. Further, G is said to be (r : m, n }-extendable if, for every connected subgraph S of order 2r for which G \ V(S) is connected, S is m-extendable and G \ V(S) is nextendable. We prove the following: Let p, r, m, and n be positive integers with p r > nand r > m. Then every 2-connected (r : m, n}-extendable graph of order 2p is (r + 1 : m + 1, n 1}-extendable.

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عنوان ژورنال:
  • Australasian J. Combinatorics

دوره 21  شماره 

صفحات  -

تاریخ انتشار 2000