Grothendieck spaces: the landscape and perspectives
Manuel Gonz\'alez, Tomasz Kania

TL;DR
This paper reviews the development, key examples, and open problems in the theory of Grothendieck spaces, highlighting recent solutions and proposing future research directions in Banach space theory.
Contribution
It synthesizes the current state of Grothendieck space theory, presents solutions to open problems, and introduces new questions to guide future research.
Findings
Solutions to several open problems from Diestel's original list.
Identification of main examples of Grothendieck spaces.
Proposals for new problems to advance the theory.
Abstract
In 1973, Diestel published his seminal paper `Grothendieck spaces and vector measures' that drew a connection between Grothendieck spaces (Banach spaces for which weak- and weak*-sequential convergences in the dual space coincide) and vector measures. This connection was developed in his book with J. Uhl Jr. `Vector measures'. Additionally, Diestel's paper included a section with several open problems about the structural properties of Grothendieck spaces, and only half of them have been solved to this day. The present paper aims at synthetically presenting the state of the art at subjectively selected corners of the theory of Banach spaces with the Grothendieck property, describing the main examples of spaces with this property, recording the solutions to Diestel's problems, providing generalisations/extensions or new proofs of various results concerning Grothendieck spaces, and…
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