Abstract
We prove an elementary result concerning the relationship between the multiplicative groups of the coordinate and endomorphism rings of the formal additive group over a field of characteristic p > 0. Both statement and proof of the main result involve the combinatorics of base p representations of positive integers in a striking way.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 125-139 |
| Number of pages | 15 |
| Journal | Israel Journal of Mathematics |
| Volume | 161 |
| DOIs | |
| State | Published - Oct 1 2007 |