CICY7838

rank 1
ℤ₂
finite

Favorable Kähler-favProduct

$h^{1,1}$: 3
$h^{2,1}$: 61
$\chi$: −116
ambient factors: 3
polynomials: 4
iso-flops: 1
Coxeter rank: 1
Coxeter group: ℤ₂

Configuration matrix: 3×4 configuration
$X_{7838} = \left[\begin{array}{c|cccc} \mathbb{P}^{1} & 1 & 1 & 0 & 0 \\ \mathbb{P}^{2} & 1 & 0 & 2 & 0 \\ \mathbb{P}^{4} & 0 & 1 & 2 & 2 \end{array}\right]^{3,61}_{-116}$
Second Chern class: $c_2(X)\cdot D_i = \begin{pmatrix} 24 & 36 & 52 \end{pmatrix}^{T}$
Coxeter diagram Gallery →
Coxeter matrix: $\begin{pmatrix} 1 \end{pmatrix}$
Iso-flop reflections Kähler representation: $\hat{M}_1$ : row 2, Type 2
$\hat{M}_1 = \begin{pmatrix} 1 & 2 & 0 \\ 0 & -1 & 0 \\ 0 & 2 & 1 \end{pmatrix}$

Database record

Mathematica

<|Num -> 7838, H11 -> 3, H21 -> 61, C2 -> {24, 36, 52}, Conf -> {{1, 1, 0, 0}, {1, 0, 2, 0}, {0, 1, 2, 2}}, Favour -> True, KahlerPos -> True, IsProduct -> False, IsoFlopRows -> {{2, "Type 2"}}, KahlerRefGens -> {{{1, 2, 0}, {0, -1, 0}, {0, 2, 1}}}, CoxeterMat -> {{1}}|>

Plain text

Num           : 7838
H11           : 3
H21           : 61
C2            : {24, 36, 52}
Conf          : {{1, 1, 0, 0}, {1, 0, 2, 0}, {0, 1, 2, 2}}
Favour        : True
KahlerPos     : True
IsProduct     : False
IsoFlopRows   : {{2, "Type 2"}}
KahlerRefGens : {{{1, 2, 0}, {0, -1, 0}, {0, 2, 1}}}
CoxeterMat    : {{1}}