Construction of minimal varieties from quasi-smooth weighted complete intersections

TL;DR

This paper generalizes the construction of minimal varieties using weighted complete intersections, establishing nefness criteria for canonical divisors and producing numerous new minimal 3-folds with diverse properties.

Contribution

It introduces effective nefness criteria for canonical divisors on weighted blow-ups and constructs many new minimal 3-folds, expanding the known classifications.

Findings

79 families of minimal 3-folds of general type

Infinite series of minimal 3-folds with Kodaira dimension 2

16 families of minimal 3-folds near Noether lines

Abstract

This paper is devoted to the generalization of the construction of minimal varieties from the previous work of Meng Chen, Chen Jiang and Binru Li. We first establish several effective nefness criterions for the canonical divisor of weighted blow-ups over a weighted complete intersection, we both consider the high codimensional case and the blowing up several points case, from which we construct plenty of new minimal $3$-folds including $79$ families of minimal $3$-folds of general type, several infinite series of minimal $3$-folds of Kodaira dimension $2$, $16$ families of minimal $3$-folds of general type on or near the Noether lines.