ε(z)	dielectric coefficient at z
qk	charge of the atom k
zk	location of charge qk
nc	number of point charges
λ(z)	characteristic function of the set ℝ3 \ Ω
ec	charge of an electron
kB	Boltzmann’s constant
T	absolute temperature
$𝕀=\frac{1}{2}{\displaystyle {\sum }_i{c}_i{z}_i^2}$	ionic strength
ci, zi	concentration and charge of ith ionic species
$\overline{\kappa }(\mathbf{z})=\sqrt{\frac{8\pi e_c^2𝕀(\mathbf{z})}{k_{B}T}}$	modified Debye-Huckel parameter
nd	number of basis functions
nq	number of quadrature points
nb	number of molecular surface mesh patches