Matrix entries for implicit numerical differentiation using Neumann boundary conditions
construct_tridiagonals(sigma, structure_constant, drift)
A list with elements super
, diag
and sub
containing the superdiagonal, diagonal and subdiagonal of the implicit timestep differencing matrix
Volatility of diffusion process (without jumps to default)
The ratio between time interval dt
and the square of space interval dz^2
Vector of drift rate of underlying equity grid points, including induced drift from default intensity