Beilinson's Abel-Jacobi and Galois-invariance conjecture

Let r2r\geq 2 be an integer. For a nonsingular projective variety XX over Q\overline{\bold Q}, let

ρ:CHr(X)homJr(XC)\rho:{\mathrm{CH}}^r(X)_{\hom}\longrightarrow J^r(X_{\bold C})

be the Abel-Jacobi map. If XC=XQCX_{\bold C}=X\otimes_{\overline{\bold Q}}\bold C and zCHr(XC)z\in {\mathrm{CH}}^r(X_{\bold C}), write zσz^\sigma for its conjugate under σAut(C/Q)\sigma\in\operatorname{Aut}(\bold C/\overline{\bold Q}). Beilinson's conjecture. (i) The map ρ\rho is injective for every such XX. (ii) For every such XX, zz, and σ\sigma,

ρ(z)=0ρ(zσ)=0.\rho(z)=0\quad\Longleftrightarrow\quad\rho(z^\sigma)=0.

The first assertion predicts injectivity of the Abel-Jacobi map on homologically trivial cycles, while the second predicts invariance of vanishing under field automorphisms. The source gives no resolution status.

Sources & referencesView supporting material

Primary source

Masanori Asakura, “Arithmetic Hodge structure and higher Abel-Jacobi maps”, arXiv:math/9908019 (1999).

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