A Comparison of Two Generalisations of Triplets of Hilbert Spaces
Functional Analysis
2025-11-04 v1
Abstract
We compare the concept of triplet of closely embedded Hilbert spaces with that of generalised triplet of Hilbert spaces in the sense of Berezanskii by showing when they coincide, when they are different, and when starting from one of them one can naturally produce the other one that essentially or fully coincides.
Cite
@article{arxiv.1911.03460,
title = {A Comparison of Two Generalisations of Triplets of Hilbert Spaces},
author = {Petru Cojuhari and Aurelian Gheondea},
journal= {arXiv preprint arXiv:1911.03460},
year = {2025}
}
Comments
14 pages. arXiv admin note: substantial text overlap with arXiv:1309.0176