Volume 4: January 2012 - December 2012

Contents

Spaces of locally convex curves in S^n and combinatorics of the group B^+_{n+1} 1
Nicolau C. Saldanha and Boris Shapiro
Irreducibility criterion for quasi-ordinary polynomials 23
Abdallah Assi
Fronts of Whitney umbrella – a differential geometric approach via blowing up 35
Toshizumi Fukui and Masaru Hasegawa
Kahn's correspondence and Cohen-Macaulay modules over abstract surface and curve singularities 68
Volodymyr Gavran
Inflection points of real and tropical plane curves 74
Erwan A. Brugallé and Lucia M. López de Medrano
A volume-preserving normal form for a reduced normal crossing function germ 104
Adrian Szawlowski
A polynomial generalization of the Euler characteristic for algebraic sets 114
Miguel A. Marco-Buzunáriz
On the classification of quasihomogeneous singularities 131
Claus Hertling and Ralf Kurbel
Picard groups of normal surfaces 154
John Brevik and Scott Nollet
Purity of boundaries of open complex varieties 171
Andrzej Weber
On a Newton filtration for functions on a curve singularity 180
Wolfgang Ebeling and Sabir Gusein-Zade
On relative invariants and determinacy of plane curves 188
C. T. C. Wall
On the cobordism groups of cooriented, codimension one Morin maps 196
András Szücs