Publications and Preprints

The articles are sorted in reverse-chronological order based on their first appearance on arXiv.

1. Stein degree on non-Fano type fibrations.
   Caucher Birkar and Santai Qu
   Surveys in Differential Geometry, 28, No. 1 (2023), 1-15. [Journal] [arXiv]
2. Stein degree on log Calabi-Yau fibrations.
   Caucher Birkar and Santai Qu
   Preprint, arXiv:2509.20948 [arXiv]
3. Saturated base change of toroidal morphisms.
   Santai Qu
   Preprint, arXiv:2509.15590 [arXiv]
4. Irrationality of degenerations of Fano varieties.
   Caucher Birkar and Santai Qu
   Accepted by American Journal of Mathematics [arXiv]
5. Injectivity theorem for generalised pairs on surfaces.
   Santai Qu
   Preprint, arXiv:2401.07248 [arXiv]
6. On subvarieties of degenerations of Fano varieties.
   Santai Qu
   International Journal of Mathematics, 35, No. 14 (2024), 16 p. [Journal] [arXiv]
7. Pseudo-Néron model and restriction of sections II.
   Santai Qu
   Preprint, arXiv:1909.07562 [arXiv]
8. On examples of supersingular and rationally chain connected threefolds.
   Santai Qu
   Journal of Algebra, 559 (2020), 184-194. [Journal]
9. Pseudo-Néron model and restriction of sections.
   Santai Qu
   Michigan Mathematical Journal, 71, No. 3 (2022), 451-486. [Journal]