Talk:Types of spaceships

Glide symmetry and Flippers

Are there some examples of glide symmetric space ships that are not flippers? Because I have a feeling that that shouldn't be possible, and if so that should be mentioned explicitly. And Life Lexicon just says "A glide symmetric spaceship is sometimes called a flipper." Elithrion 06:25, 2 March 2009 (UTC)

Good call, you're quite right. I'll make the change now. Nathaniel 12:44, 2 March 2009 (UTC)

Splitting the article?

I'm not sure whether some of the sections on this page should get their own pages or not. While some seem like they might be significant enough, others do not. Also, greyships might be a good addition to this page (I described them slightly on the spaceship page). ~Sokwe

My thinking with this article was that it would be for brief definitions that wouldn't be large enough to warrant their own articles. If a particular section of this article gets long enough that it could stand on its own, then by all means it should be split (and I think that there might be enough information on Greyships to do just that, actually). Nathaniel 03:59, 19 April 2009 (UTC)

Non-monotonic spaceships

Concerning non-monotonic spaceships, the page says "The first example was found by Hartmut Holzwart in August 1992". That may be true for orthogonal spaceships, but not diagonal ones: Corderships, which were first built in 1991, are non-monotonic.

This also affects the "Bounding box" page.

Dean Hickerson, dean.hickerson@yahoo.com

Thanks Dean, you're of course quite right. I haven't been able to find any non-monotonic c/4 diagonal spaceship from pre-1991 in my collections so I don't know for 100% sure whether or not the Cordership was the first overall -- does anyone else know of an earlier diagonal non-monotonic spaceship? Nathaniel 14:47, 11 September 2009 (UTC)