Text this: Convergence analyses of crank-nicolson orthogonal spline collocation methods for linear parabolic problems in two space variables

 _    _     ______              ______    _  _   
| || | ||  /_   _//   ____     /_   _//  | \| || 
| || | ||   -| ||-   |    \\    -| ||-   |  ' || 
| \\_/ ||   _| ||_   | [] ||    _| ||_   | .  || 
 \____//   /_____//  |  __//   /_____//  |_|\_|| 
  `---`    `-----`   |_|`-`    `-----`   `-` -`  
                     `-`