Ballico: On the automorphisms of surfaces of general type in positive characteristic, II

Ballico, Edoardo:
On the automorphisms of surfaces of general type in positive characteristic, II (Sugli automorfismì delle superfici di tipo generale in caratteristica positiva, II)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni Serie 9 5 (1994), fasc. n.1, p. 63-68, (English)
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In questa Nota si dimostra una stima polinomiale (come funzione di \( K_{X^{2}} \)) indipendente da \( p \)) per l'ordine dei \( p \)-sottogruppi di \( Aut (X)_{red} \), con \( X \) superficie minimale di tipo generale definita sul campo \( K \) con \( char (K) = p > 0 \). Si mostra anche la non esistenza di analoghe stime per la dimensione come \( K \)-spazio vettoriale del fascio strutturale dello schema \( Aut(X) \).

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