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Let $X$ be an $n$-dimensional compact Kahler manifold with negative first Chern class. Are its Chern numbers $\prod_{i=1}^{n-1} c_i^{k_i}$, over $k _i \geq 0$ with $\sum ik_i = n$, bounded in terms of $(-1)^n e(X) = (-1)^nc_n = c_n(\Omega_X^1)$? Are there, moreover, only finitely many deformation types for $|e(X)| = (-1)^{n}e(X)$ bounded? For $n = 2$, we have of course the famous Bogomolov-Miyaoka-Yau bound $c_1^2 \leq 3c_2$. Remark. One may also include the convention $c_0 := 1$, for which the answer is positive since $(-1)^nc_n > 0$, in order to cover the prototypical observation that the Euler number of a hyperbolic surface is negative. In view of this example, I would also like to extend the original question to the realm of log manifolds and hyperbolicity. |
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Let $X$ be an $n$-dimensional compact Kahler manifold with positive negative first Chern class. Are its Chern numbers $\prod_{i=1}^{n-1} c_i^{k_i}$, over $k _i \geq 0$ with $\sum ik_i = n$, bounded in terms of $c_n (-1)^n e(X) = (-1)^n e(X)$-1)^nc_n = c_n(\Omega_X^1)$? Are there only finitely many deformation types for $|e(X)| = (-1)^{n}e(X)$ bounded? For $c_n$?n = 2$, we have of course the Bogomolov-Miyaoka-Yau bound $c_1^2 \leq 3c_2$. Remark. One may also include the convention $c_0 := 1$, for which the answer is positive since $c_n (-1)^nc_n > 0$, in order to cover the prototypical observation that the Euler number of a hyperbolic surface is negative. In view of this example, I would also like to extend the original question to the realm of log manifolds and hyperbolicity. |
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