deductive theory

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• Theory (mathematical logic) — This article is about theories in a formal language, as studied in mathematical logic. For other uses, see Theory (disambiguation). In mathematical logic, a theory (also called a formal theory) is a set of sentences in a formal language. Usually… …   Wikipedia

• Deductive reasoning — Deductive reasoning, also called deductive logic, is reasoning which constructs or evaluates deductive arguments. Deductive arguments are attempts to show that a conclusion necessarily follows from a set of premises or hypotheses. A deductive… …   Wikipedia

• Deductive system — A deductive system (also called a deductive apparatus of a formal system) consists of the axioms (or axiom schemata) and rules of inference that can be used to derive the theorems of the system.[1] Such a deductive system is intended to preserve… …   Wikipedia

• Deductive-nomological model — The deductive nomological model (or D N model) is a formalized[citation needed] view of scientific explanation in natural language. It characterizes scientific explanations primarily as deductive arguments with at least one natural law statement… …   Wikipedia

• Deductive-nomological — The deductive nomological (or D N) model is a formalized view of scientific explanation in natural language. It characterizes scientific explanations primarily as deductive arguments with at least one natural law statement among its premises.… …   Wikipedia

• Deductive closure — For other uses, see Closure (disambiguation). Peter D. Klein, in the second edition of The Cambridge Dictionary of Philosophy, defines closure as follows: A set of objects, O, is said to exhibit closure or to be closed under a given operation, R …   Wikipedia

• Hypothetico-deductive model — The hypothetico deductive model or method, first so named by William Whewell,[1][2] is a proposed description of scientific method. According to it, scientific inquiry proceeds by formulating a hypothesis in a form that could conceivably be… …   Wikipedia

• Grounded theory — (GT) is a systematic methodology in the social sciences involving the generation of theory from data.[1] It is mainly used in qualitative research, but is also applicable to quantitative data.[2] Grounded theory is a research method, which… …   Wikipedia

• Grounded theory (Glaser) — Grounded theory is a general research method for behavioral science developed by the sociologists Barney Glaser (born 1930) (trained in quantitative sociology by Paul Lazarsfeld) and Anselm Strauss (1916 1996) (trained in symbolic interactionism… …   Wikipedia

• Model theory — This article is about the mathematical discipline. For the informal notion in other parts of mathematics and science, see Mathematical model. In mathematics, model theory is the study of (classes of) mathematical structures (e.g. groups, fields,… …   Wikipedia

• Set theory — This article is about the branch of mathematics. For musical set theory, see Set theory (music). A Venn diagram illustrating the intersection of two sets. Set theory is the branch of mathematics that studies sets, which are collections of objects …   Wikipedia