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Evenals hier worden ook in China wiskunde-competities voor middelbare scholieren georganiseerd. Eduard Looijenga werd gevraagd als jury-lid: hij reisde af naar het Oosten en was tevensgetuige van de opening van een nieuw wiskundig onderzoeksinstituut. De Chinese wiskunde beleeft een enorme opmars

Real map germs and higher open books

We present a general criterion for the existence of open book structures defined by real map germs (\bR^m, 0) \to (\bR^p, 0), where $m> p \ge 2$, with isolated critical point. We show that this is satisfied by weighted-homogeneous maps. We also derive sufficient conditions in case of map germs with isolated critical value.Comment: 12 page

On Proper Polynomial Maps of C2.\mathbb{C}^2.

Two proper polynomial maps $f_1, f_2 \colon \mathbb{C}^2 \longrightarrow \mathbb{C}^2$ are said to be \emph{equivalent} if there exist $\Phi_1, \Phi_2 \in \textrm{Aut}(\mathbb{C}^2)$ such that $f_2=\Phi_2 \circ f_1 \circ \Phi_1$. We investigate proper polynomial maps of arbitrary topological degree $d \geq 2$ up to equivalence. Under the further assumption that the maps are Galois coverings we also provide the complete description of equivalence classes. This widely extends previous results obtained by Lamy in the case $d=2$.Comment: 15 pages. Final version, to appear in Journal of Geometric Analysi

Bookreview Geometry of algebraic curves. Volume II (Grundlehren der mathematischen Wissenschaften, 268)

Geometry of algebraic curves. Volume II (Grundlehren der mathematischen Wissenschaften, 268

Trento notes on Hodge theory

These are the notes of an introductory course on Hodge theory. The subject matter includes mixed Hodge theory and the period mappings of some special projective manifolds