Lang's rational-point conjecture for separably rationally connected varieties over C1C_1 fields

Let kk be a C1C_{1} field, meaning that every hypersurface of degree at most nn in Pkn\mathbb{P}^{n}_{k} has a kk-rational point. A variety is separably rationally connected if two general points can be joined by a rational curve through which the corresponding evaluation map is separable. Lang's conjecture. Every smooth proper separably rationally connected variety over kk has a kk-rational point.

This conjecture predicts rational points for a broad class of varieties over fields satisfying the C1C_{1} condition. The source does not state a resolution status for the conjecture.

Sources & referencesView supporting material

Primary source

H. Uppal, “Singular del Pezzo surfaces over finite fields”, arXiv:2311.07317 (2023).

Additional references

3 papers in this index state this conjecture (2019–2023). The statement above is taken from the most recent of them; the others are arXiv:2304.05881, arXiv:1905.02227.

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