We obtain new lower bounds on the codimension of local isometric imbeddings of complex and quaternion projective spaces. We show that any open set of the complex projective space $P^n(\pmb{C})$ (resp. quaternion projective space $P^n(\pmb{H})$) cannot be locally isometrically imbedded into the euclidean space of dimension $4n-3$ (resp. $8n-4$).
These estimates improve the previously known results obtained in [2] and [7].
@article{1285766428,
author = {AGAOKA, Yoshio and KANEDA, Eiji},
title = {A lower bound for the class number of $P^n(\pmb{C})$ and $P^n(\pmb{H})$},
journal = {Hokkaido Math. J.},
volume = {35},
number = {1},
year = {2006},
pages = { 753-766},
language = {en},
url = {http://dml.mathdoc.fr/item/1285766428}
}
AGAOKA, Yoshio; KANEDA, Eiji. A lower bound for the class number of $P^n(\pmb{C})$ and $P^n(\pmb{H})$. Hokkaido Math. J., Tome 35 (2006) no. 1, pp. 753-766. http://gdmltest.u-ga.fr/item/1285766428/