R* (disambiguation)

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R*, R*, or *R can mean the following:

  • R*, the symbol for an ecological concept developed by G. David Tilman to explain the minimum concentration to which an organism can reduce a resource. R is the symbol he uses for generic resources, hence R*
  • *R and R* may refer to the hyperreal numbers
  • Rockstar Games, a games developer most notable for the Grand Theft Auto series, and its subsidiaries
  • R Star