Type: Article
Publication Date: 1992-12-01
Citations: 14
DOI: https://doi.org/10.1017/s0004972700012065
We apply Straßmann's theorem to p –adic power series satisfying linear differential equations with polynomial coefficients and note that our approach leads to our estimating the number of integer zeros of polynomials on a given interval and thence to an investigation of the number of p –adic small values of a function on such an interval, that is, of the number of solutions of a congruence modulo p r .