Nx X0Edit

I want to make sure I write about the right topic. Could you clarify what "Nx X0" refers to? For example, is it:

• a mathematical or scientific concept (perhaps a notation like N×X0 or a named construct in a theory),
• a political or economic policy idea or framework,
• a technology product, project codename, or cultural phenomenon, or
• something else entirely?

Also, do you have a preferred length or level of technical detail (general-audience, or more specialized)? Once I know that, I can draft the article in the requested style with the internal encyclopedia links.