Abstract
The ability of an open system to exhibit more than one stable state under the same set of external constraints is a classic illustration of the profound difference between open and closed systems. Until quite recently, however, the set of homogeneous systems reported to show multistability was limited to the Belousov-Zhabotinsky reaction [1] (and its cerium-bromate subsystem [2]), the Briggs-Rauscher reaction [3], and the reaction of bis(trichloromethyl)trisulfide with aniline in methanol [4].