[see also: adaptation, adjustment, modification, variant]
The example is a variation on the space known as the “Warsaw circle''.
Let us sketch the proof of the first estimate, which is a variation of standard arguments.
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