function [ alpha, beta, delta, epsilon ] = spiral_parameters ( )

%*****************************************************************************80
%
%% spiral_parameters() returns parameters for the spiral reaction-diffusion PDE.
%
%  Licensing:
%
%    This code is distributed under the MIT license.
%
%  Modified:
%
%    04 February 2021
%
%  Author:
%
%    John Burkardt
%
%  Output:
%
%    real alpha, beta, delta, epsilon: PDE parameters.
%
  alpha =   0.25;
  beta =    0.001;
  delta =   0.00001;
  epsilon = 0.002;

  return
end

