On the Abel-Radon Transform of Locally Residual Currents with Respect to a Family of Complete Intersections

COMPLEX ALGEBRAIC GEOMETRY
Topic:On the Abel-Radon Transform of Locally Residual Currents with Respect to a Family of Complete Intersections
Speaker:Bruno Fabre
Affiliation:Stockholm University, Sweden and Member, School of Mathematics
Date:Wednesday, March 14
Time/Room:2:30pm - 3:30pm/S-101

Let $X\subset \P^N$ be a projective submanifold of dimension $n$ in the complex projective space $\P^N$. Let $U$ be a domain in the parameter space $T$ of complete intersections of codimension $m$ and of a given bidegree $(d_1,\dots,d_m)$ in $\P^N$, and $U^*:= \cup_{t\in U}{H_t}\subset \P^N$ be the reunion of the corresponding complete intersections. The Abel-Radon transform associates to a $\overline\partial-$closed current $\alpha$ of bidegree $(q+p,p)$ on $V^*:=U^*\cap X$ an holomorphic $q-$form $R(\alpha)$ on $U$, where $p+m=n$. After recalling the definition of locally residual currents, we show the following theorem (shown in {Fabre B., {\it Sur la transformation d'Abel-Radon des courants localement r\'esiduels}, Ann. Scuola Normale Sup. di Pisa, Cl. Sci (5) Vol. IV, Fasc. 1 (2005)}, for $p=1$ and $X=\P^N$), which generalizes the inverse Abel's theorem shown by P. Griffiths in {\it Variations on a theorem of Abel, Inv. math. 35 (1976)}: {\it Let $\alpha$ be a current of bidegree $(q+p,p)$ on $V^*$, {\it locally residual}. If ${R}(\alpha)=0$, and $q>0$, then $\alpha$ extends to $X$ in a unique way as a $\overline\partial-$closed locally residual current $\tilde\alpha$ of the same bidegree.} Moreover, if $s