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JCT
2008
76views more  JCT 2008»
14 years 9 months ago
Bisimplicial vertices in even-hole-free graphs
Louigi Addario-Berry, Maria Chudnovsky, Fré...
JCT
2008
87views more  JCT 2008»
14 years 9 months ago
End spaces of graphs are normal
We show that the topological space of any infinite graph and its ends is normal. In particular, end spaces themselves are normal.
Philipp Sprüssel
JCT
2008
61views more  JCT 2008»
14 years 9 months ago
Enumerating split-pair arrangements
An arrangement of the multi-set {1, 1, 2, 2, . . . , n, n} is said to be "split-pair"
Ronald L. Graham, Nan Zang
JCT
2008
77views more  JCT 2008»
14 years 9 months ago
Counting descent pairs with prescribed tops and bottoms
Given sets X and Y of positive integers and a permutation = 12
John T. Hall, Jeffrey B. Remmel
JCT
2008
62views more  JCT 2008»
14 years 9 months ago
A Schur function identity related to the (-1)-enumeration of self-complementary plane partitions
We give another proof for the (-1)
Theresia Eisenkölbl