DOI QR코드

DOI QR Code

A STUDY ON HOLOMORPHIC ISOMETRIES OF WEIGHTED BERGMAN METRICS

  • Aakanksha Jain (Department of Mathematics Indian Institute of Science) ;
  • Kaushal Verma (Department of Mathematics Indian Institute of Science)
  • 투고 : 2023.09.12
  • 심사 : 2024.07.25
  • 발행 : 2024.11.01

초록

For a domain D ⊂ ℂn and an admissible weight µ on it, we consider the weighted Bergman kernel KD,µ and the corresponding weighted Bergman metric on D. In particular, motivated by work of Mok, Ng, Chan-Yuan and Chan-Xiao-Yuan among others, we study the nature of holomorphic isometries from the disc 𝔻 ⊂ ℂ with respect to the weighted Bergman metrics arising from weights of the form µ = K-d𝔻 for some integer d ≥ 0. These metrics provide a natural class of examples that give rise to positive conformal constants that have been considered in various recent works on isometries. Specific examples of isometries that are studied in detail include those in which the isometry takes values in 𝔻n and 𝔻 × 𝔹n where each factor admits a weighted Bergman metric as above for possibly different non-negative integers d. Finally, the case of isometries between polydisks in possibly different dimensions, in which each factor has a different weighted Bergman metric as above, is also presented.

키워드

과제정보

The first named author was supported in part by the PMRF Ph.D. fellowship of the Ministry of Education, Government of India.

참고문헌

  1. E. Calabi, Isometric imbedding of complex manifolds, Ann. of Math. (2) 58 (1953), 1–23. https://doi.org/10.2307/1969817
  2. S. T. Chan, M. Xiao, and Y. Yuan, Holomorphic isometries between products of complex unit balls, Internat. J. Math. 28 (2017), no. 9, 1740010, 22 pp. https://doi.org/10.1142/S0129167X17400109
  3. S. T. Chan and Y. Yuan, Holomorphic isometries from the Poincaré disk into bounded symmetric domains of rank at least two, Ann. Inst. Fourier (Grenoble) 69 (2019), no. 5, 2205–2240. https://doi.org/10.5802/aif.3293
  4. S. Kobayashi, Geometry of bounded domains, Trans. Amer. Math. Soc. 92 (1959), 267–290. https://doi.org/10.2307/1993156
  5. N. Mok, Extension of germs of holomorphic isometries up to normalizing constants with respect to the Bergman metric, J. Eur. Math. Soc. (JEMS) 14 (2012), no. 5, 1617–1656. https://doi.org/10.4171/JEMS/343
  6. N. Mok and S. C. Ng, Germs of measure-preserving holomorphic maps from bounded symmetric domains to their Cartesian products, J. Reine Angew. Math. 669 (2012), 47–73.
  7. S.-C. Ng, On holomorphic isometric embeddings of the unit disk into polydisks, Proc. Amer. Math. Soc. 138 (2010), no. 8, 2907–2922. https://doi.org/10.1090/S0002-9939-10-10305-0
  8. S.-C. Ng, On holomorphic isometric embeddings of the unit n-ball into products of two unit m-balls, Math. Z. 268 (2011), no. 1-2, 347–354. https://doi.org/10.1007/s00209-010-0675-8
  9. Z. Pasternak-Winiarski, On the dependence of the reproducing kernel on the weight of integration, J. Funct. Anal. 94 (1990), no. 1, 110–134. https://doi.org/10.1016/0022-1236(90)90030-O
  10. Z. Pasternak-Winiarski, On weights which admit the reproducing kernel of Bergman type, Internat. J. Math. Math. Sci. 15 (1992), no. 1, 1–14. https://doi.org/10.1155/S0161171292000012
  11. Y. Yuan, On local holomorphic maps preserung invariant (p.p)-forms between bounded symmetric domains, Math. Res. Lett. 24 (2017), no. 6, 1875-1895. https://doi.org/10.4310/MRL.2017.v24.n6.a15