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楼主: 二足动物
发表于 2025-3-27 00:36:05 | 显示全部楼层
A framework for data structures,al class. Since many data structures cannot be modelled by tree structures in a natural way, such a generalisation to graphs is desirable. Furthermore, the concept of hierarchy in which a node may serve for an arbitrary complex substructure supports a structured view of complex data objects.
发表于 2025-3-27 01:27:38 | 显示全部楼层
An observation concerning the complexity of problems with few solutions and its application to crypds to a ‘yes’ answer — then A is not NP-hard. We apply this result to Cryptography, and show that if our new hypothesis is true then a well designed cryptosystem, whose cracking problem is NP-hard, contains a large subproblem which is not NP-hard.
发表于 2025-3-27 07:10:08 | 显示全部楼层
https://doi.org/10.1007/978-3-322-87685-0iving many examples. Decision problems and closure properties under graph operations are also discussed. Among others it is shown that whether two rational machines generate the same series of graphs is undecidable.
发表于 2025-3-27 09:33:17 | 显示全部楼层
https://doi.org/10.1007/978-3-663-02709-6he one proposed by Guibas, McCreight, Plass and Roberts, yet it has many of its properties. Our structure is as simple as the one proposed by Brown/Tarjan, but our structure can treat arbitrary sequences of insertions and deletions whilst theirs can only treat non-interacting insertions and deletions.
发表于 2025-3-27 14:15:41 | 显示全部楼层
Series of graphs generated by rational machines,iving many examples. Decision problems and closure properties under graph operations are also discussed. Among others it is shown that whether two rational machines generate the same series of graphs is undecidable.
发表于 2025-3-27 20:09:06 | 显示全部楼层
发表于 2025-3-27 22:49:41 | 显示全部楼层
https://doi.org/10.1007/978-3-322-87585-3 graph-like intermediate code in which all structural information of the source code is still present. Optimization is then carried out by graph manipulations. This is sketched by some examples, namely local common subexpression elimination, motion of loop invariant computations, and induction variable elimination.
发表于 2025-3-28 04:55:22 | 显示全部楼层
Möglichkeiten und Grenzen der Medizinine a communication geometry which Kung calls the "one-dimensional array of processors", and which we call a "processor vector" or "PV". We will see that this simple structure can efficiently solve the rather difficult problems of multiplying matrices and of constructing minimum spanning trees.
发表于 2025-3-28 08:20:22 | 显示全部楼层
https://doi.org/10.1007/978-3-322-87592-1al class. Since many data structures cannot be modelled by tree structures in a natural way, such a generalisation to graphs is desirable. Furthermore, the concept of hierarchy in which a node may serve for an arbitrary complex substructure supports a structured view of complex data objects.
发表于 2025-3-28 10:52:01 | 显示全部楼层
https://doi.org/10.1007/978-3-322-88533-3ds to a ‘yes’ answer — then A is not NP-hard. We apply this result to Cryptography, and show that if our new hypothesis is true then a well designed cryptosystem, whose cracking problem is NP-hard, contains a large subproblem which is not NP-hard.
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