Black swan emblems and popular culture cluster in Australia: Upper Swan, Middle Swan, Swan Valley, Swan View, West Swan, Swan Estuary, Swan District, and the City (formerly Shire) of Swan. The Swan Land District is the major cadastral unit of the state, underlying much of the name cluster. There are at least twenty "Swan" street names in the Perth metropolitan area. There are no "White Swan" toponyms in the state, and the toponymist Reed lists only the Swan River as a "Swan" toponym in the state. The rarer form of "Cygnet" ("young swan") only occurs in three places, all along the Kimberley coast, where they commemorate
Richard Swan of Chicago. His doctoral students at Chicago include Charles Weibel, also known for his work in K-theory. Richard Swan Richard Gordon Swan (; born 1933) is an American mathematician who is known for the Serre–Swan theorem relating the geometric notion of vector bundles to the algebraic concept of projective modules, and for the Swan representation, an "l"-adic projective representation of a Galois group. His work has mainly been in the area of algebraic K-theory. Swan earned his Ph.D. in 1957 from Princeton University under the supervision of John Coleman Moore. In 1969 he proved in full generality what is now