The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
The uniqueness of the Bertotti-Robinson electromagnetic universe
Abstract
By employing the spin coefficient formalism of Newman and Penrose a direct proof is obtained that the Bertotti-Robinson electromagnetic universe is the only conformally flat solution of the source-free Einstein-Maxwell equations for nonnull fields.
Overview
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
In the citing paper
“All conformally flat electrovac metrics with a vanishing cosmological constant Λ have been known for a long time [45,46,47,48].”
From Explicit Kundt type II and N solutions as gravitational waves in various type D and O universes (2003) · cites this paper as [47]
Citations
Cites
An Approach to Gravitational Radiation by a Method of Spin Coefficients
Newman, E., & Penrose, R. (1962) · Journal of Mathematical Physics · doi:10.1063/1.1724257 · Cited by 2,702
Research works printed but not linked: 9
- 1959, Phys. Rev., 116, 1331, 10.1103/PhysRev.116.1331 · DOI · Paper page
- 1959, Bull. Acad. Pol. Sci. Ser. Sci. Math. Astr. Phys., 7, 351
- 1967, Comm. Math. Phys., 5, 257, 10.1007/BF01646478 · DOI
- 1968, Comm. Math. Phys., 9, 161, 10.1007/BF01645841 · DOI
- 1965, Bull. Acad. Roy. Belg., 51, 1179
- 1966, J. Math. Mech., 16, 501
- 1963, J. Math. Phys., 4, 915, 10.1063/1.1704018 · DOI
- 1969, J. Math. Phys., 10, 1195, 10.1063/1.1664958 · DOI
- 1971, Tensor, N.S., 22, 333
Cited by
Explicit Kundt type II and N solutions as gravitational waves in various type D and O universes
Podolsk, J., & Ortaggio, M. (2003) · Classical and Quantum Gravity · doi:10.1088/0264-9381/20/9/307 · Cited by 61
Metadata
- Authors
- Tariq, N., & Tupper, B. O. J.
- Venue
- Journal of Mathematical Physics
- Publisher
- AIP Publishing
- Published
- 1974-12-01
- Volume
- 15
- Issue
- 12
- Pages
- 2232-2235
- ISSN
- 0022-2488
- 1089-7658
- Cited by
- 24
- References
- 1
- Language
- en
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: The uniqueness of the Bertotti-Robinson electromagnetic universe. https://app.cochat.ai/papers/10.1063/1.1666604
- The paper
- Tariq, N., & Tupper, B. O. J. (1974). The uniqueness of the Bertotti-Robinson electromagnetic universe. Journal of Mathematical Physics. https://doi.org/10.1063/1.1666604
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.