There probably are countless others, but this is the first that we know of. And I wouldn’t know whether trivial multiples that still tile the plane non-periodi

There probably are countless others, but this is the first that we know of. And I wouldn’t know whether trivial multiples that still tile the plane non-periodically exist. Once you pick a multiple, even the claim that any of these basic structures in the plane is part of the multiple you picked doesn’t seem to have an obvious, trivial (1) proof to me, let alone the additional requirement that you can find non-overlapping ones. (1) I’m trying, likely unsuccessfully, to dodge the problem of triviality in mathematics (https://en.wikipedia.org/wiki/Triviality_(mathematics) https://en.wikipedia.org/wiki/Triviality_(mathematics)) here