Abstract: The -bracket , which is the -analog of the identity function, is also a norm-preserving isometry, for each . In this paper we investigate its fixed points.
[M]K.
Mahler, An interpolation series for continuous functions of a
𝑝-adic variable, J. Reine Angew. Math. 199
(1958), 23–34. MR 0095821
(20 #2321)
[Se]Jean-Pierre
Serre, Lie algebras and Lie groups, 2nd ed., Lecture Notes in
Mathematics, vol. 1500, Springer-Verlag, Berlin, 1992. 1964 lectures
given at Harvard University. MR 1176100
(93h:17001)
[Su]V.
I. Sushchanskiĭ, Standard subgroups of the isometry group of
the metric space of 𝑝-adic integers, Vīsnik Kiïv.
Unīv. Ser. Mat. Mekh. 30 (1988), 100–107, 117
(Ukrainian, with Russian summary). MR 1004462
(90k:11160)