Global operator overloading in F#

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Here is the (non idiomatic) solution:

type Mult = Mult with
    static member inline ($) (Mult, v1: 'a list) = fun (v2: 'b list) -> 
        v1 |> List.collect (fun x -> v2 |> List.map (fun y -> (x, y))) : list<'a * 'b>
    static member inline ($) (Mult, v1:'a      ) = fun (v2:'a) -> v1 * v2 :'a

let inline (*) v1 v2 = (Mult $ v1) v2

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