A technical mathematical object defined as the Spectrum of a set of Prime Ideals of a commutative Ring regarded as a local ringed space with a structure sheaf.

**References**

Iyanaga, S. and Kawada, Y. (Eds.). ``Schemes.'' §18E in
*Encyclopedic Dictionary of Mathematics.* Cambridge, MA: MIT Press, p. 69, 1980.

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1999-05-25