In algebraic geometry, a derived scheme is a pair
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Connection with differential graded rings and examples
Just as affine algebraic geometry is equivalent (in categorical sense) to the theory of commutative rings (commonly called commutative algebra), affine derived algebraic geometry is (roughly in homotopical sense) equivalent to the theory of commutative differential graded rings. One of the main example of derived schemes comes from the derived intersection of subschemes of a scheme, giving the Koszul complex. For example, let
Generalizations
A derived stack is a stacky generalization of a derived scheme.