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・ Inductive cleavage
・ Inductive coupling
・ Inductive data type
・ Inductive dimension
・ Inductive discharge ignition
・ Inductive effect
・ Inductive functional programming
・ Inductive logic programming
・ Inductive output tube
・ Inductive probability
・ Inductive programming
・ Inductive pump
・ Inductive reasoning
・ Inductive reasoning aptitude
・ Inductive sensor
Inductive set
・ Inductive transfer
・ Inductive type
・ Inductively coupled plasma
・ Inductively coupled plasma atomic emission spectroscopy
・ Inductively coupled plasma mass spectrometry
・ Inductivism
・ Inductor
・ Inductrack
・ Induk University
・ Indukantha ghritha
・ Indukti
・ Induktion, Varianz und Deren Folgen
・ Induku Zethu
・ Indukurupeta


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Inductive set : ウィキペディア英語版
Inductive set

:''Bourbaki also defines an inductive set to be a partially ordered set that satisfies the hypothesis of Zorn's lemma when nonempty.''
In descriptive set theory, an inductive set of real numbers (or more generally, an inductive subset of a Polish space) is one that can be defined as the least fixed point of a monotone operation definable by a positive Σ1''n'' formula, for some natural number ''n'', together with a real parameter.
The inductive sets form a boldface pointclass; that is, they are closed under continuous preimages. In the Wadge hierarchy, they lie above the projective sets and below the sets in L(R). Assuming sufficient determinacy, the class of inductive sets has the scale property and thus the prewellordering property.
==References==

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