Sorry if this is a dumb question...

I would like to upgrade from an older version to current Numerics library.
I have lots of code of the form:

        double[][] ActualGaps = new double[10][];
        // ... fill in ActualGaps
        Matrix mB = new Matrix(ActualGaps); //create B from 10 row, 1 column array

New version of Numerics requires something like

        Matrix<double> mB = new Matrix(ActualGaps); //create B from 10 row, 1 column array

But that's still not correct; right side generates error:

  Error 1   Using the generic type 'MathNet.Numerics.LinearAlgebra.Matrix<T>' requires 1 type arguments

What's the correct syntax?

Thanks!