Fanography

A tool to visually study the geography of Fano 3-folds.

Identification

Fano variety 1-7

section of Plücker embedding of $\mathrm{Gr}(2,6)$ by codimension 5 subspace

rank
1 (others)
$-\mathrm{K}_X^3$
14
$\mathrm{h}^{1,2}(X)$
5
Hodge diamond
1
0 0
0 1 0
0 5 5 0
0 1 0
0 0
1
Anticanonical bundle
index
1
$\dim\mathrm{H}^0(X,\omega_X^\vee)$
10
$-\mathrm{K}_X$ very ample?
yes
$-\mathrm{K}_X$ basepoint free?
yes
hyperelliptic
no
trigonal
no
Birational geometry

This variety is not rational but unirational.


This variety is primitive.


This variety is fibre-like, i.e. it can appear as the fibre of a Mori fibre space.

Deformation theory
number of moduli
15

$\mathrm{Aut}^0(X)$ $\dim\mathrm{Aut}^0(X)$ number of moduli
$0$ 0 15