Absolutely $lq$-finite extension

El Hassane Fliouet

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arXiv · 1701.05430

Absolutely $lq$-finite extension

El Hassane Fliouet

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Abstract

Let K/k be purely inseparable extension of characteristic p \textgreater{} 0. By invariants, we characterize the measure of the size of K/k. In particular, we give a necessary and sufficient condition that K/k is of bounded size. Furthermore, in this note, we continue to be interested in the relationship that connects the restricted distribution of finitude at the local level of intermediate fields of a purely inseparable extension K/k to the absolute or global finitude of K/k. Part of this problem was treated successively by J.K Devney, and in my work with M. Chellali. The other part is the subject of this paper, it is a question of describing the absolutely lq-finite extensions. Among others, any absolutely lq-finite extension decomposes into w0-generated extensions. However, we construct an example of extension of infinite size such that for any intermediate field L of K/k, L is of finite size over k. In addition, K/k does not respect the distribution of horizontal finitude.

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El Hassane Fliouet. 2017-01-19. Absolutely $lq$-finite extension. https://arxiv.org/abs/1701.05430

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