 nef.x(1) compute Hodge numbers of nef-partitions

Other Alias

nef-<num>d.x

nef.x <Options>

## DESCRIPTION

The nef-<num>d.x variant programs, where <num> is one of 4, 5, 6 and 11 work in different dimensions ; nef.x defaults to dimension 6.

## Options

-h
prints this information
-f or -
use as filter; otherwise parameters denote I/O files
-N
input is in N-lattice (default is M)
-H
gives full list of Hodge numbers
-Lv
prints L vector of Vertices (in N-lattice)
-Lp
prints L vector of Points (in N-lattice)
-p
prints only partitions, no Hodge numbers
-D
calculates also direct products
-P
calculates also projections
-t
full time info
-cCODIM
codimension (default = 2)
-Fcodim
fibrations up to codim (default = 2)
-y
prints poly/CWS in M lattice if it has nef-partitions
-S
information about #points calculated in S-Poly
-T
checks Serre-duality
-s
don't remove symmetric nef-partitions
-n
prints polytope only if it has nef-partitions
-v
prints vertices and #points of input polytope in one line; with -u, -l the output is limited by #points:
-uPOINTS
... upper limit of #points (default = POINT_Nmax)
-lPOINTS
... lower limit of #points (default = 0)
-m
starts with [d w1 w2 ... wk d=d_1 d_2 (Minkowski sum)
-R
prints vertices of input if not reflexive
-V
prints vertices of N-lattice polytope
-Q
only direct products (up to lattice Quotient)
-gNUMBER
prints points of Gorenstein polytope in N-lattice
-dNUMBER
prints points of Gorenstein polytope in M-lattice
if NUMBER = 0 ... no
0/1 info
if NUMBER = 1 ... no redundant
0/1 info (=default)
if NUMBER = 2 ... full
0/1 info
-G
Gorenstein cone: input <-> support polytope