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BY-NC-ND 3.0 license Open Access Published by De Gruyter Open Access April 14, 2016

An introduction to Rota’s universal operators: properties, old and new examples and future issues

  • Carl C. Cowen and Eva A. Gallardo-Gutiérrez
From the journal Concrete Operators


The Invariant Subspace Problem for Hilbert spaces is a long-standing question and the use of universal operators in the sense of Rota has been an important tool for studying such important problem. In this survey, we focus on Rota’s universal operators, pointing out their main properties and exhibiting some old and recent examples.


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Received: 2015-12-3
Accepted: 2016-1-26
Published Online: 2016-4-14

© 2016 Cowen and Gallardo-Gutiérrez

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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