Invariance of pedal unfolding and Legendrian duality under A-equivalence

Let φ1,φ2:(R2,0)(R3,0)\varphi_1,\varphi_2:(\mathbb{R}^2,0)\to(\mathbb{R}^3,0) be two CC^\infty map-germs of pedal unfolding type. Let Φ1,Φ2:(R2,0)(R3,0)\Phi_1,\Phi_2:(\mathbb{R}^2,0)\to(\mathbb{R}^3,0) be two normalized Legendrian map-germs. Invariance conjecture. If φ1\varphi_1 is A\mathcal{A}-equivalent to φ2\varphi_2, then I(φ1)\mathcal{I}(\varphi_1) is A\mathcal{A}-equivalent to I(φ2)\mathcal{I}(\varphi_2); and if Φ1\Phi_1 is A\mathcal{A}-equivalent to Φ2\Phi_2, then D(Φ1)\mathcal{D}(\Phi_1) is A\mathcal{A}-equivalent to D(Φ2)\mathcal{D}(\Phi_2). This conjecture naturally extends the preceding bijectivity theorems by asserting that the constructions also respect A\mathcal{A}-equivalence. The supplied text gives no resolution of either assertion.

Sources & referencesView supporting material

Primary source

Takashi Nishimura, “Whitney umbrellas and swallowtails”, arXiv:1112.5011 (2011).

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