Alternate normal form conjecture for generic unfoldings of saddle-nodes
Alternate normal form conjecture for generic unfoldings of saddle-nodes
Let , let be a germ of holomorphic function, and let satisfy . Consider a generic convergent unfolding of a germ of saddle-node holomorphic vector field with formal invariant .
Alternate normal form conjecture. Any such unfolding is orbitally conjugate to an unfolding of the form
\fonf+y\widehat{R}\pp y, \qquad \widehat{R}\in x\pol x_{<k}\left\\{x^{\widehat{\tau}}y\right\\}.Moreover, this form is unique up to conjugacy by linear maps
where . This proposed form is intended as a generalization of earlier normal forms, while the existence and uniqueness assertion is presented in the source as a conjectural extension.
Sources & referencesView supporting material
Primary source
C. Rousseau and Loïc Jean Dit Teyssier, “Analytic normal forms and inverse problems for unfoldings of 2-dimensional saddle-nodes with analytic center manifold”, arXiv:1810.04890 (2018).
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