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The number of minimally connected block designs

✍ Scribed by David Birkes; Yadolah Dodge


Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
678 KB
Volume
4
Category
Article
ISSN
0167-9473

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The number of vertices of degree k in a
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Let k be a positive integer, and D = (V (D), E(D)) be a minimally k-edge-connected simple digraph. We denote the outdegree and indegree of x ∈ V (D) by δ D (x) and ρ D (x), respectively. Let u + (D) denote the number of vertices W. Mader asked the following question in [Mader, in Paul Erdâs is Eigh