[see also: basic, critical, crucial, key]
Essential to the proof are certain topological properties of G.
The assumed positivity of un is essential for these results.
We will not use this fact in any essential way.
Go to List of words starting with:
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
Y
Z