Casoratian

Casoratian[{y1,y2,…},n] gives the Casoratian determinant for the sequences y1, y2, … depending on n.

Casoratian[eqn,y,n] gives the Casoratian determinant for the basis of the solutions of the linear difference equation eqn involving y[n+m]. 

Casoratian[eqns,{y1,y2,…},n] gives the Casoratian determinant for the system of linear difference equations eqns.

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