Abstract.
Here we are interested in birational properties of the moduli space of stable maps to the complex projective line. In particular, we determine the class of the canonical divisor in the rational Picard group and we investigate the cones of ample and effective divisors.
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-divisors on Kontsevich’s moduli space Author information
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Bini, G., Fontanari, C. On the birational geometry of 
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manuscripta math. 115, 379–387 (2004). https://doi.org/10.1007/s00229-004-0497-2
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DOI: https://doi.org/10.1007/s00229-004-0497-2