We discover a general optimal inequality for graph hypersurfaces
in affine $(n + 1)$-space $\mathbf{R}^{n+1}$ involving
the Tchebychev vector field. We also completely classify the
hypersurfaces which verify the equality case of the inequality.
@article{1116442328,
author = {Chen, Bang-Yen},
title = {An optimal inequality and an extremal class of graph hypersurfaces in affine geometry},
journal = {Proc. Japan Acad. Ser. A Math. Sci.},
volume = {80},
number = {6},
year = {2004},
pages = { 123-128},
language = {en},
url = {http://dml.mathdoc.fr/item/1116442328}
}
Chen, Bang-Yen. An optimal inequality and an extremal class of graph hypersurfaces in affine geometry. Proc. Japan Acad. Ser. A Math. Sci., Tome 80 (2004) no. 6, pp. 123-128. http://gdmltest.u-ga.fr/item/1116442328/