This article is cited in 4 papers

The different and discriminant of regular mappings

I. V. Dolgachev, A. N. Parshin

Steklov Mathematical Institute, USSR Academy of Sciences

Abstract: The different of morphisms of surfaces onto curves is studied. A relationship is established between the discriminant and Euler characteristics of degenerate layers for morphisms without multiple components.

UDC: 513.83

Received: 18.01.1968

 English version: Mathematical Notes, 1968, 4:5, 802–804

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