|Budget Amount *help
¥1,300,000 (Direct Cost : ¥1,300,000)
Fiscal Year 1999 : ¥700,000 (Direct Cost : ¥700,000)
Fiscal Year 1998 : ¥600,000 (Direct Cost : ¥600,000)
Meanwhile, by Taylor expansion of holomorphic differentials on the Fermat curve, the Weierstrass weight of Leopoldt Weierstrass points, and scrutinize its Wronskian were computed. From it the original equations for general Weierstrass points on the quotient space of the curve by its automorphisms were extracted.
It was shown that a family of Riemann surfaces of genus one (elliptic curves) represented by three-sheeted coverings of the Rie-mann sphere with one totally branched point can be considered as a twenty-seven sheeted covering of the Riemann sphere with four points removed, and can be endowed with complex structure of compact Riemann surface of genus three with twenty-three points removed. The monodromy group is represented by the Galois group of algebraic equation in the parameters of the family. In addition, all the coverings of the family can be obtained from two-sheeted covering of the Riemann sphere with four branch points by attaching another Riemann sphere along curves connecting one of the branch points and a point outside four branch points.