Correction to "Quaternionic Davis–Wielandt shell in a right quaternionic Hilbert space'', Ukrainian Mathematical Journal, vol. 75, No. 6, November, 2023 (Ukrainian original vol. 75, No. 6, June, 2023)

UDC 517.5 We correct a mistake made in the proof of Example 2.1. In fact $\langle T\phi,\phi\rangle_{\mathbb{H}}=0$ is not true in the case where $T=\begin{pmatrix} \mathbf{q} & 0 \\0 & -\mathbf{q}\\\end{pmatrix}.$

Publication Details

Journal
Ukrains’kyi Matematychnyi Zhurnal
Published
2025-10-01
DOI
https://doi.org/10.3842/umzh.v77i10.9201
Primary Topic
Diverse Scientific and Economic Studies
Type
article
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article

Correction to "Quaternionic Davis–Wielandt shell in a right quaternionic Hilbert space'', Ukrainian Mathematical Journal, vol. 75, No. 6, November, 2023 (Ukrainian original vol. 75, No. 6, June, 2023)

Ukrains’kyi Matematychnyi Zhurnal
Diverse Scientific and Economic Studies
article

Correction to "Quaternionic Davis–Wielandt shell in a right quaternionic Hilbert space'', Ukrainian Mathematical Journal, vol. 75, No. 6, November, 2023 (Ukrainian original vol. 75, No. 6, June, 2023)

article en

Abstract

UDC 517.5 We correct a mistake made in the proof of Example 2.1. In fact $\langle T\phi,\phi\rangle_{\mathbb{H}}=0$ is not true in the case where $T=\begin{pmatrix} \mathbf{q} & 0 \\0 & -\mathbf{q}\\\end{pmatrix}.$

Ukrains’kyi Matematychnyi ZhurnalVol. 77(10)
Openalex Percentile: Top 34%
Diverse Scientific and Economic Studies
DOIOpen Access PDFOpenAlex
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Correction to "Quaternionic Davis–Wielandt shell in a right quaternionic Hilbert space'', Ukrainian Mathematical Journal, vol. 75, No. 6, November, 2023 (Ukrainian original vol. 75, No. 6, June, 2023) · Ukrains’kyi Matematychnyi Zhurnal (2025) | TGRS Research Map | TGRS