


Rank of displayed eigenvalues 
Rank of displayed eigenvectors 

Triangle of area 1 

to 
to 

Triangle of area 4 

to 
to 

Triangle of area 16 

to 
to 

Triangle with a rotated triangular hole 

to 
to 

Hexagon 

to 
to 

Set of 3 hexagons 

to 
to 

Set of 3 hexagons with 1 internal Dirichlet condition 

to 
to 

Set of 4 hexagons 

to 
to 

Set of 4 hexagons with 1 internal Dirichlet condition 

to 
to 

Ring of 6 hexagons 

to 
to 

Hexagon with a rotated hexagonal hole 

to 
to 

Set of 7 hexagons 

to 
to 

Set of 7 hexagons with 3 internal Dirichlet conditions 

to 
to 

Set of 7 hexagons with 4 internal Dirichlet conditions 

to 
to 

Set of 7 hexagons with 5 internal Dirichlet conditions 

to 
to 

Set of 7 hexagons with 5 internal Dirichlet conditions 

to 
to 

Set of 7 hexagons with 7 internal Dirichlet conditions 

to 
to 

Set of 7 hexagons with 4 internal Dirichlet conditions 

to 
to 

Set of 7 hexagons with 9 internal Dirichlet conditions 

to 
to 

Set of 7 hexagons with 6 internal Dirichlet conditions 

to 
to 

Set of 7 hexagons with 8 internal Dirichlet conditions 

to 
to 

Set of 7 hexagons with 6 internal Dirichlet conditions 

to 
to 

Set of 7 hexagons with 6 internal Dirichlet conditions 

to 
to 

Set of 7 hexagons with 5 internal Dirichlet conditions 

to 
to 

Set of 19 hexagons 

to 
to 

Set of 19 hexagons with 12 internal Dirichlet conditions 

to 
to 

Set of 19 hexagons with 15 internal Dirichlet conditions 

to 
to 

Set of 19 hexagons with 20 internal Dirichlet conditions 

to 
to 

Set of 19 hexagons with 20 internal Dirichlet conditions 

to 
to 

Set of 19 hexagons with 16 internal Dirichlet conditions 

to 
to 

Set of 19 hexagons with 16 internal Dirichlet conditions 

to 
to 

Set of 19 hexagons with 18 internal Dirichlet conditions 

to 
to 