Here are listed some published papers or preprints, avalaible as
dvi or postscript files.
Geometric aspects of the complex Heisenberg group, joint work with
Valentino Cristante, published on Bollettino UMI (7) 10-B, 595-623. In this
paper we study Heat Equation on Siegel upper half-space and its relations
with a representation of the complex Heisenberg group, explaining the role
of theta functions in this setting.
(dvi version 109Kb)
(Postscript version 248Kb)
Vettori di Witt ed anelli di Fontaine, lectures note of a
short course given at the Mathematical Department of Padova
about the construction of Fontaine rings Bdr etc.
starting from Witt bivectors. Written in Italian, it was published as
(dvi version 235Kb)
(Postscript version 454Kb)
A note about p-adic logarithm This paper contains the
construction of the ring BivR over a general local
field K and this ring is compared with Fontaine rings.
In an appendix it is proved that the elements of BivR
which are invariants under Frobenius action are exactly the elements of
the p-adic field Qp. Unpublished.
(dvi version 86Kb)
(Postscript version 200Kb)
Monodromy of logarithmic Barsotti-Tate groups attached to 1-motives This
joint paper with Alessandra Bertapelle and Valentino Cristante deals with
Barsotti-Tate ($p$-divisible) groups of 1-motives
over a complete discrete valuation ring with perfect residue field
of positive characteristic $p$. It answers to a question of extending
such groups on the quotient field to analogous groups over the valuation ring.
(pdf version 302Kb)