Constant scalar curvature Kaehler surfaces and parabolic polystability
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A complex ruled surface admits an iterated blow-up encoded by a parabolic structure with rational weights. Under a condition of parabolic stability, one can construct a Kaehler metric of constant scalar curvature on the blow-up according to math.DG/0412405. We present a generalization of this construction to the case of parabolically polystable ruled surfaces. Thus we can produce numerous examples of Kaehler surfaces of constant scalar curvature with circle or toric symmetry.
28 pages; no figures; v2 relaxed notion of sporadic parabolic structures
28 pages; no figures; v2 relaxed notion of sporadic parabolic structures