Abstract
It is shown that if is a Noetherian graded ring, where A
0 is a field of characteristic p > 0 and if I is a maximally differential graded ideal of A, then there exists a Noetherian graded subring B of A such that A has a p-basis over B and such that the irrelevant maximal ideal of B extends to I. The graded analog of Harper's theorem has also been proved as a corollary.
ACKNOWLEDGMENT
The author would like to thank Arbind K. Lal for verifying Lemma 3.5 (part (d)), by some computer programme before the author was able to construct the proof.
Notes
Communicated by W. Bruns.