A property of a lattice. Related to the rate at which the number of
self-avoiding walks on the lattice grows (cn) with the
number of steps. Since it is known that the limit as n goes to
infinity of 1/n(log cn) exists, it
is possible to define the value of the limit as being the growth
constant of the lattice, usually denoted by the Greek letter mu.
The connective constant is the logarithm of
this value, often denoted by the Greek letter kappa.