참고문헌
- R. Aron and P. Berner, A Hahn-Banach extension theorem for analytic functions, Bull. Soc. Math. France 106(1978), 3-24.
- K.M. Ball, The plank problem for symmetric bodies, Invent. Math. 104(1991), 535-543. https://doi.org/10.1007/BF01245089
- T. Bang, A solution of the plank problem for symmetric bodies, Proc. Amer. Math.Soc. 2(1951), 990-993.
- F.F. Bonsall and J. Duncan, Numerical Ranges II, London Math. Soc. Lecture Note Ser. 10, Cambridge Univ. Press, 1973.
- Y.S. Choi, D. Garcia, S.G. Kim, and M. Maestre, The polynomial numerical index of a Banach space, Proc. Edinburgh Math. Soc. 49(2006), 39-52. https://doi.org/10.1017/S0013091502000810
- A.M. Davie and T.W. Gamelin, A theorem on polynomial-star approximation, Proc. Amer. Math. Soc. 106(1989), 351-356. https://doi.org/10.1090/S0002-9939-1989-0947313-8
- S. Dineen, Complex Analysis on Infinite Dimensional Spaces, Springer Monographs in Mathematics, Springer-Verlag, London, 1999.
- S.G. Kim, Polynomial plank constants, Preprint.
- Sz. Revesz and Y. Sarantopoulos, Plank problems, polarization and Chebyshev con- stants, J. Korean Math. Soc. 41(2004), 157-174. https://doi.org/10.4134/JKMS.2004.41.1.157