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Rational nodal curves with no smooth Weierstrass points

Rational nodal curves with no smooth Weierstrass points

Let <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper X"> <mml:semantics> <mml:mi>X</mml:mi> <mml:annotation encoding="application/x-tex">X</mml:annotation> </mml:semantics> </mml:math> </inline-formula> denote the rational curve with <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="n plus 1"> <mml:semantics> <mml:mrow> <mml:mi>n</mml:mi> <mml:mo>+</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> <mml:annotation encoding="application/x-tex">n+1</mml:annotation> </mml:semantics> </mml:math> </inline-formula> nodes obtained from the Riemann sphere by identifying 0 with <inline-formula content-type="math/mathml"> <mml:math …