Topologically inseparable functions II: Infinitary case |
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Authors: | Renato A Lewin |
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Institution: | 1. Facultad de Matemáticas, Pontificia Universidad Católica de Chile, Casilla 306, Correo 22, Santiago, Chile
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Abstract: | Given a set A and a function A: A → A, we study the set of all functions g: A → A that are continuous for all topologies for which f continuous. We prove that in a sense to be made precise in the text, for any essentially infinitary function f, any non-constant such g equals f n , for some n∈ ?. We also prove a similar result for the clone of n-ary functions from A n → A. |
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