# Revision history [back]

### How to obtain the eigenvector for the following graph?

G=graphs.EmptyGraph()

l=G.laplacian_matrix()

show(l)

g=l[[1,2,3,4,5],[1,2,3,4,5]]

d=~g

show(d)

t=d[[0,1,2],[0,1,2]]

show(t)

Q=matrix(QQ,3 , 3, lambda x, y: 1)

e=t-0.5*Q

z=e.eigenvectors_right()

z.sort()

show(z)

My eigenvectors are not coming and sage is giving some error report. How to recover it?

 2 None FrédéricC 5114 ●3 ●42 ●111

### How to obtain the eigenvector for the following graph?

G=graphs.EmptyGraph()

l=G.laplacian_matrix()

show(l)

g=l[[1,2,3,4,5],[1,2,3,4,5]]

d=~g

show(d)

t=d[[0,1,2],[0,1,2]]

show(t)

G.show() l=G.laplacian_matrix() show(l) g=l[[1,2,3,4,5],[1,2,3,4,5]] d=~g show(d) t=d[[0,1,2],[0,1,2]] show(t) Q=matrix(QQ,3 , 3, lambda x, y: 1)

e=t-0.5*Q

z=e.eigenvectors_right()

z.sort()

1) e=t-0.5*Q z=e.eigenvectors_right() z.sort() show(z)

My eigenvectors are not coming and sage is giving some error report. How to recover it?

 3 None FrédéricC 5114 ●3 ●42 ●111

### How to obtain the eigenvector for the following graph?

Here is some code:

G=graphs.EmptyGraph()
G.show()
l=G.laplacian_matrix()
show(l)
g=l[[1,2,3,4,5],[1,2,3,4,5]]
d=~g
show(d)
t=d[[0,1,2],[0,1,2]]
show(t)
Q=matrix(QQ,3 , 3, lambda x, y: 1)
e=t-0.5*Q
z=e.eigenvectors_right()
z.sort()
show(z)show(z)


My eigenvectors are not coming and sage is giving some error report. How to recover it?