49 research outputs found
On an invariant related to a linear inequality
Let A be an m-dimensional vector with positive real entries. Let A_{i,j} be
the vector obtained from A on deleting the entries A_i and A_j. We investigate
some invariant and near invariants related to the solutions E (m-2 dimensional
vectors with entries either +1 or -1) of the linear inequality |A_i-A_j| <
denotes the usual inner product. One of our
methods relates, by the use of Rademacher functions, integrals involving
trigonometric quantities to these quantities.Comment: 9 page
Coleman-Gross height pairings and the -adic sigma function
We give a direct proof that the Mazur-Tate and Coleman-Gross heights on
elliptic curves coincide. The main ingredient is to extend the Coleman-Gross
height to the case of divisors with non-disjoint support and, doing some
-adic analysis, show that, in particular, its component above gives, in
the special case of an ordinary elliptic curve, the -adic sigma function.
We use this result to give a short proof of a theorem of Kim characterizing
integral points on elliptic curves in some cases under weaker assumptions. As a
further application, we give new formulas to compute double Coleman integrals
from tangential basepoints.Comment: AMS-LaTeX 17 page