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The Relational Model Is Injective for Multiplicative Exponential Linear Logic
Annual Conference for Computer Science Logic, 2015We prove a completeness result for Multiplicative Exponential Linear Logic (MELL): we show that the relational model is injective for MELL proof-nets, i.e.
D. Carvalho
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Systems Research, 1988
AbstractSome conceptual problems which are related to the way data (i.e. empirical information) are represented in model building are discussed. Elements of a framework for modelling are proposed in which a constructive relationship between the data and the modelling relation itself is incorporated.
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AbstractSome conceptual problems which are related to the way data (i.e. empirical information) are represented in model building are discussed. Elements of a framework for modelling are proposed in which a constructive relationship between the data and the modelling relation itself is incorporated.
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SYNTHESIS OF MODELS RELATED TO TASPINE
Organic Preparations and Procedures International, 1991Abstract The synthesis of diphenylic compounds related to the alkaloid taspine 1 is reported.
SCARPATI, Maria Luisa +2 more
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1977
A relation is a mathematical term for a two-dimensional table such as the one shown in figure 3.15. It is characterised by rows and columns, each entry there being a data item value. The reason for calling this a relation rather than a matrix lies in the lack of homogeneity in its entries — the entries are homogeneous in the columns but not in the rows.
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A relation is a mathematical term for a two-dimensional table such as the one shown in figure 3.15. It is characterised by rows and columns, each entry there being a data item value. The reason for calling this a relation rather than a matrix lies in the lack of homogeneity in its entries — the entries are homogeneous in the columns but not in the rows.
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1997
In this chapter we describe the Relational Model. This was proposed by Codd, in 1970, long before any relational database system became commercially available. Consequently standards, such as the SQL language, have rapidly emerged in contrast to earlier database systems. The relational model consists of three components: a relation (this being the only
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In this chapter we describe the Relational Model. This was proposed by Codd, in 1970, long before any relational database system became commercially available. Consequently standards, such as the SQL language, have rapidly emerged in contrast to earlier database systems. The relational model consists of three components: a relation (this being the only
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Dispersion relations in the Lee Model
Nuclear Physics, 1960Abstract The self energy and the wave function renormalization constant in the Lee Model are calculated with the technique of dispersion relations. The results agree with those obtained in the usual manner.
de Celles, Paul, Feldman, Gordon
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Injective Models and Disjunctive Relations
Journal of Logic and Computation, 1993The main purpose of this paper is to characterize the nonmonotonic inference relations that can be represented by preferential models in which distinct states never satisfy exactly the same formulae (``injective models''). The key tool is the author's concept of ``preferential orderings''.
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2011
We developed the modeling relation in the preceding chapter as a relation between a natural system and a formal system. This relation was established through an appropriate encoding of the qualities of the natural system into the propositions of the formal system, in such a way that the inferential structure of the latter correspond to the system laws ...
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We developed the modeling relation in the preceding chapter as a relation between a natural system and a formal system. This relation was established through an appropriate encoding of the qualities of the natural system into the propositions of the formal system, in such a way that the inferential structure of the latter correspond to the system laws ...
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2017
Science can be understood as a vast repository of models. Given a natural system, one may select the models that are most appropriate for whichever purpose one has in mind. Eventually, one can tweak the model as needed. This conception lies at the heart of the Newtonian way of doing science, and it underpins our understanding of science and modeling as
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Science can be understood as a vast repository of models. Given a natural system, one may select the models that are most appropriate for whichever purpose one has in mind. Eventually, one can tweak the model as needed. This conception lies at the heart of the Newtonian way of doing science, and it underpins our understanding of science and modeling as
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2003
In this chapter we introduce the relational model, a collection of methods and techniques for organizing databases centered on the notion of a relation as the data structure. After we present the notion of a relation, we present other fundamental concepts such as candidate key, primary key and foreign key.
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In this chapter we introduce the relational model, a collection of methods and techniques for organizing databases centered on the notion of a relation as the data structure. After we present the notion of a relation, we present other fundamental concepts such as candidate key, primary key and foreign key.
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