Similarity and representation in chemical knowledge practices

Bengoetxea, Juan Bautista; Todt, Oliver; Luján, José Luis

doi:10.1007/s10698-014-9203-y

Cited by 2 publications

(1 citation statement)

References 46 publications

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“…Despite the relevance of similarity and order for the periodic system [22], 2 they are considered as separate aspects of it, with some emphasis on classification [24][25][26][27] 3 caused by the, taken for granted, ordering of the elements based upon atomic number. Whereas the possibilities for classifying are multiple given the huge number of properties chemical elements have, an exceptional example stressing ordering over similarity for the case of the table is the definition from Wikipedia: 'The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic number, electron configurations, and recurring chemical properties' [29].…”

Section: (B) the Role Of Similarity And Ordermentioning

confidence: 99%

Formal structure of periodic system of elements

Leal

Restrepo

2019

Proc. R. Soc. A.

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For more than 150 years the structure of the periodic system of the chemical elements has intensively motivated research in different areas of chemistry and physics. However, there is still no unified picture of what a periodic system is. Herein, based on the relations of order and similarity, we report a formal mathematical structure for the periodic system, which corresponds to an ordered hypergraph. It is shown that the current periodic system of chemical elements is an instance of the general structure. The definition is used to devise a tailored periodic system of polarizability of single covalent bonds, where order relationships are quantified within subsets of similar bonds and among these classes. The generalised periodic system allows envisioning periodic systems in other disciplines of science and humanities.

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Section: (B) the Role Of Similarity And Ordermentioning

confidence: 99%

Formal structure of periodic system of elements

Leal

Restrepo

2019

Proc. R. Soc. A.

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Explicaciones, mecanismos y reacciones químicas

Bengoetxea

Todt

2014

Principia

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Abstract. In this paper we propose an enhanced notion of mechanistic explanation that is in accordance with chemical practice. From the necessity of understanding practices of explanatory inquiry in organic chemistry from a dynamic point of view in which intervention and contrafactual experimental settings are emphasized, a non-nomological-deductive mechanistic explanation view is presented. Not sufficiently emphasizing the explanatory and dynamic features has led some philosophers of chemistry to doubt about this view's validity in this field of science. In this article we claim that a well articulated consideration of those features in the mechanistic explanation view may both strengthen this model and correctly account for the explanatory activities in the case of the study of organic chemical reactions.Keywords: Explanation; mechanism; organic chemistry; experimental practices. IntroducciónLa explicación científica constituye uno de los temas más candentes en la filosofía de la ciencia desde que varios autores en la década de 1990 recogieran el testigo que previamente Hempel y Oppenheim (1948), Nagel (1961) y Hempel (1965) trajeran consigo a la disciplina (Cfr. Psillos 2002, p.215-7). Los desarrollos al respecto de los últimos 25 años han elaborado aun más la noción con detalles novedosos vinculados a las tareas que la actividad científica real lleva a cabo de maneras cada vez más complejas. Han sido de gran ayuda para el estudio de la explicación los nuevos enfoques de la filosofía de la ciencia a partir de 1980, en particular dos: el nuevo experimentalismo y la filosofía de las prácticas científicas.1 Cada uno de ellos ha originado imágenes de la ciencia complementarias a muchos resultados de los estudios más tradicionales 'volcados en la estructura lógico-lingüística de las teorías' que concebían la ciencia sólo como conocimiento proposicional. Más allá de algunos estudios previos sobre las prácticas científicas (Fleck 1935, Polanyi 1958, sólo posteriormente han emergido los nuevos enfoques que han analizado la experimentación y las prácticas. En particular, aquí nos interesa hacer hincapié en la elaboración de mecanismos y de explicaciones en la ciencia experimental de laboratorio. La química, más allá de su indispensable faceta teórica (modelos, simulaciones, cálculos computacionales), depende en un alto grado del trabajo en laboratorios (experimentación) y de muchos Principia 18(3): 393-417 (2014).

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Similarity and representation in chemical knowledge practices

Cited by 2 publications

References 46 publications

Formal structure of periodic system of elements

Formal structure of periodic system of elements

Explicaciones, mecanismos y reacciones químicas

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