The eigencurve intersection conjecture for one-dimensional local representations

Let ll) and pp be distinct rational primes, let SS be a finite set of places of Q\mathbb{Q} containing pp, ll and \infty, and let E\mathcal{E} be the cuspidal eigencurve lying over a modular two-dimensional residual representation VFV_{\mathbb{F}}. Each point xEx\in\mathcal{E} has an associated two-dimensional Frobenius semisimple Weil–Deligne representation (ρx,l,Nx)(\rho_{x,l},N_x).

Eigencurve intersection conjecture. If xEx\in\mathcal{E} is such that π(ρx,l,Nx)\pi(\rho_{x,l},N_x) is one dimensional, then there exist irreducible components Z,ZE\mathcal{Z},\mathcal{Z}'\subset\mathcal{E}, generically special and principal series respectively, such that xZZx\in\mathcal{Z}\cap\mathcal{Z}'.

This conjecture predicts that every failure of local-to-global compatibility arising from a one-dimensional local representation occurs at an intersection of a generically special component and a generically principal-series component of the eigencurve. The supplied text gives no resolution of the conjecture.

Sources & referencesView supporting material

Primary source

Alexander G. M. Paulin, “Failure of the Local to Global Principle in the Eigencurve”, arXiv:1001.2051 (2010).

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