The pointed Brody principle for the Kobayashi–Royden pseudometric
The pointed Brody principle for the Kobayashi–Royden pseudometric
Let be a compact complex manifold and let . The infinitesimal Kobayashi–Royden pseudometric is the pseudometric on tangent vectors defined by holomorphic disks in ; it is degenerate on when it vanishes on a nonzero tangent vector.
Pointed Brody conjecture. If the infinitesimal Kobayashi–Royden pseudometric is degenerate on , then there exists a non-constant holomorphic map
\nwith .
This asks whether degeneracy at a prescribed point forces an entire curve passing through that point, strengthening the existence conclusion supplied by Brody's theorem, which does not ensure that the resulting curve meets the prescribed point. The source provides no resolution, so the conjecture remains open.
Progress summary
Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.
Sources & referencesView supporting material
Primary source
Joerg Winkelmann, “An Example related to Brody's theorem”, arXiv:math/0405219 (2004).
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