new TensorSpan<double>(new double[j], lengths: new IntPtr[] {2}, strides: new IntPtr[] {1}); 

using System.Diagnostics.CodeAnalysis;
using System.Numerics.Tensors;

namespace ConsoleApp1;

public abstract class Program
{
	[Experimental("SYSLIB5001")]
	public static void Main()
	{
		new TensorSpan<double>(new double[0], lengths: new IntPtr[] {2}, strides: new IntPtr[] {1});
		new TensorSpan<double>(new double[2], lengths: new IntPtr[] {2}, strides: new IntPtr[] {1});
		new TensorSpan<double>(new double[1], lengths: new IntPtr[] {2}, strides: new IntPtr[] {1}); 
	}
}