the freiheitssatz of magnus for one-relator groups is one of the cornerstones of combinatorial group theory. in this short note which is mostly expository we discuss the relationship between the freiheitssatz and corre-sponding results in free power series rings over fields. these are related to results of schneerson not readily available in english. this relationship uses a faithful representa...

Objective: to verify and characterize the use of formal non-formal methods protect intellectual property by incubated companies that operate in health sector. Methodology/approach: bibliographic research, research with primary sources, comparative study interaction organizations environment. The companies' source information was obtained through face-to-face interviews field carried out at Celt...

finally a specific act regarding contracts of the sale of future building ratified in iran, in 89/5/24. this act necessitated getting license for announcement of sale of future, advertisement, ending the construction of the building foundation at the time of the contract, formal contract, specifying the fines for the delay in carrying out the commitments of transferring the gradual possession t...