Commutative algebra | Algebraic geometry

Rees algebra

In commutative algebra, the Rees algebra of an ideal I in a commutative ring R is defined to be The extended Rees algebra of I (which some authors refer to as the Rees algebra of I) is defined as This construction has special interest in algebraic geometry since the projective scheme defined by the Rees algebra of an ideal in a ring is the blowing-up of the spectrum of the ring along the subscheme defined by the ideal. (Wikipedia).

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Commutative algebra | Quotient ring | Proj construction | Local ring | Torsion (algebra) | Krull dimension | Symmetric algebra | Algebraic geometry | Noetherian ring | Associated graded ring | Blowing up | Commutative ring