On the injectivity of certain homomorphisms between extensions of ${\hat{\mathcal{G}}}^{(\lambda )}$ by ${\hat{\mathbb{G}}}_m$ over a ${\mathbb{Z}}_{(p)}$-algebra

Michio Amano

Let ${\hat{\mathcal{G}}}^{(\lambda )}$ be a formal group scheme which deforms ${\hat{\mathbb{G}}}_a$ to ${\hat{\mathbb{G}}}_m$. And let $ψ^{(l)}:\widehat{\mathcal{G}}^{(λ)}\rightarr…