It is particularly useful where finiteness assumptions are satisfied, for example finitely generated groups, or finitely presented groups (i.e. in addition the relations are finite).
The company's business practices have generated controversy and antipathy from some vocally dissatisfied customers, while others are marginally satisfied.
The certificate indicated that the agency was satisfied the company had adequate third-party liability insurance for its operations, a spokeswoman said.
Desalination is currently expensive compared to most alternative sources of water, and only a very small fraction of total human use is satisfied by desalination.