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出典:Wiktionary
出典:『Wiktionary』 (2015/09/12 03:20 UTC 版)
Named after the Belgian mathematician Eugène Charles Catalan.
Catalan surface (複数形 Catalan surfaces)
出典:Wikipedia
出典:『Wikipedia』 (2011/03/07 12:18 UTC 版)
In geometry, a Catalan surface, named after the Belgian mathematician Eugène Charles Catalan, is a ruled surface all of whose rulings are parallel to a fixed plane. The vector equation of a Catalan surface is given by
Catalan surface