Filter: Conditions for stability
filter:
rough velocity
d+2e < 1+b
c < 1/2+e
b+c+e < 1+2d
b+d < 1/2+c+e
d < 1/2+b
c < 1/2
b+c < 1+2d
b+d < 1/2+c
stable " b,c
c < 1/2
b+c < 1
b < 1/2+c
stable " b
stable " b
stable " b
b < 1/2