Obstacle
发表于 2025-3-23 10:05:34
https://doi.org/10.1007/978-3-642-87508-3The methods are useful both in theory and in practice: they help us to prove general results about groups and particular results about individual groups. The first section, about Cayley and Schreier diagrams, illustrates well both these aspects. It also contains an informal account of group presentations.
Conduit
发表于 2025-3-23 17:07:26
https://doi.org/10.1007/978-3-662-44628-7l have two functions, say . and ., clearly satisfying . ≤ ., and we shall show that max . = min .. The results of the chapter are closely interrelated so the order they are proved in is a matter of taste; to emphasize this, some results will be given several proofs.
depreciate
发表于 2025-3-23 20:50:40
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Lasting
发表于 2025-3-23 23:26:33
Flows, Connectivity and Matching,l have two functions, say . and ., clearly satisfying . ≤ ., and we shall show that max . = min .. The results of the chapter are closely interrelated so the order they are proved in is a matter of taste; to emphasize this, some results will be given several proofs.
适宜
发表于 2025-3-24 05:50:49
Extremal Problems, we present the fundamental result concerning the forbidden subgraph problem and discuss some closely related extremal questions. We have to emphasize that we do not intend to provide an overall view of extremal graph theory.
IOTA
发表于 2025-3-24 06:46:40
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胆汁
发表于 2025-3-24 11:37:14
Graphs and Groups,The methods are useful both in theory and in practice: they help us to prove general results about groups and particular results about individual groups. The first section, about Cayley and Schreier diagrams, illustrates well both these aspects. It also contains an informal account of group presentations.
Nonporous
发表于 2025-3-24 18:35:26
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表示向下
发表于 2025-3-24 19:01:49
https://doi.org/10.1007/978-3-662-44628-7bra and analysis. Every result we are going to present is a necessary and sufficient condition for the existence of certain objects: in each case the beauty of the theorem is that a condition whose necessity is obvious is shown to be also sufficient. In the natural formulation of our results we shal
一回合
发表于 2025-3-25 02:55:19
https://doi.org/10.1007/978-3-7091-5423-6st .? A complete graph ..? These questions are special cases of the so called .: given a graph ., determine ex(.; .), the maximal number of edges in a graph of order . not containing .. The forbidden subgraph problem is a prime example of the rather large family of . in graph theory. In this chapter