Example of a noncontinuable holomorphic transformation of an analytic hypersurface

1982 ◽  
Vol 32 (1) ◽  
pp. 540-541 ◽  
Author(s):  
V. K. Beloshapka



1980 ◽  
Vol 79 (4) ◽  
pp. 546-546
Author(s):  
William A. Adkins


2013 ◽  
Vol 24 (03) ◽  
pp. 1350021 ◽  
Author(s):  
CAMILLE PLENAT ◽  
DAVID TROTMAN

We show that the possible drop in multiplicity in an analytic family F(z, t) of complex analytic hypersurface singularities with constant Milnor number is controlled by the powers of t. We prove equimultiplicity of μ-constant families of the form f + tg + t2h if the singular set of the tangent cone of {f = 0} is not contained in the tangent cone of {h = 0}.



1996 ◽  
Vol 16 (4) ◽  
pp. 683-702
Author(s):  
Xianghong Gong

AbstractWe show that for a certain family of integrable reversible transformations, the curves of periodic points of a general transformation cross the level curves of its integrals. This leads to the divergence of the normal form for a general reversible transformation with integrals. We also study the integrable holomorphic reversible transformations coming from real analytic surfaces in ℂ2 with non-degenerate complex tangents. We show the existence of real analytic surfaces with hyperbolic complex tangents, which are contained in a real hyperplane, but cannot be transformed into the Moser—Webster normal form through any holomorphic transformation.



2012 ◽  
Vol 21 (4) ◽  
pp. 789-797 ◽  
Author(s):  
Javier Fernández de Bobadilla


2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Joël Merker

A connected real analytic hypersurface M⊂Cn+1 whose Levi form is nondegenerate in at least one point—hence at every point of some Zariski-dense open subset—is locally biholomorphic to the model Heisenberg quadric pseudosphere of signature (k,n-k) in one point if and only if, at every other Levi nondegenerate point, it is also locally biholomorphic to some Heisenberg pseudosphere, possibly having a different signature (l,n-l). Up to signature, pseudosphericity then jumps across the Levi degenerate locus and in particular across the nonminimal locus, if there exists any.







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