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CPC
2004
92views more  CPC 2004»
14 years 11 months ago
Large Topological Cliques in Graphs Without a 4-Cycle
Mader asked whether every C4-free graph G contains a subdivision of a complete graph whose order is at least linear in the average degree of G. We show that there is a subdivision...
Daniela Kühn, Deryk Osthus
CPC
2004
76views more  CPC 2004»
14 years 11 months ago
On Some Parameters in Heap Ordered Trees
Heap ordered trees are planted plane trees, labelled in such a way that the labels always increase from the root to a leaf. We study two parameters, assuming that p of the n nodes ...
Kate Morris, Alois Panholzer, Helmut Prodinger
CPC
2004
69views more  CPC 2004»
14 years 11 months ago
New Bounds on Parent-Identifying Codes: The Case of Multiple Parents
Let C be a code of length n over an alphabet of q letters. A codeword y is called a descendant of a set of t codewords {x1 , . . . , xt } if yi {x1 i , . . . , xt i} for all i = ...
Noga Alon, Uri Stav
CPC
2004
98views more  CPC 2004»
14 years 11 months ago
And/Or Trees Revisited
We consider boolean functions over n variables. Any such function can be represented (and computed) by a complete binary tree with and or or in the internal nodes and a literal in...
Brigitte Chauvin, Philippe Flajolet, Danièl...