The DOI matches its Crossref record.
On the Geographical Problem of the Four Colours
Overview
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Claims the paper makes
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Self-check
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Citations
Cited by
Robertson, N., Sanders, D., Seymour, P., & Thomas, R. (1997) · Journal of Combinatorial Theory, Series B · doi:10.1006/jctb.1997.1750 · Cited by 598
Social processes and proofs of theorems and programs
De Millo, R. A., Lipton, R. J., & Perlis, A. J. (1979) · Communications of the ACM · doi:10.1145/359104.359106 · Cited by 537
History of Interactive Theorem Proving
Harrison, J., Urban, J., & Wiedijk, F. (2014) · Handbook of the History of Logic · doi:10.1016/b978-0-444-51624-4.50004-6 · Cited by 107
Reproducibility failures are essential to scientific inquiry
Redish, A. D., Kummerfeld, E., Morris, R. L., & Love, A. C. (2018) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1806370115 · Cited by 66
Metadata
- Authors
- Kempe, A. B.
- Venue
- American Journal of Mathematics
- Publisher
- JSTOR
- Published
- 1879-09
- Volume
- 2
- Issue
- 3
- Pages
- 193
- ISSN
- 0002-9327 (ISSN-L)
- OpenAlex
- W2333732752
- Cited by
- 266
- References
- 0
- Type
- journal article
- Language
- en
- Open access
- closed
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.
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How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: On the Geographical Problem of the Four Colours. https://app.cochat.ai/papers/10.2307/2369235
- The paper
- Kempe, A. B. (1879). On the Geographical Problem of the Four Colours. American Journal of Mathematics. https://doi.org/10.2307/2369235
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.
