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We expand Čech cohomology of a topological space with values in a presheaf on to Čech cohomology of a commutative ring with unity with values in a presheaf on . The strategy is to observe that both the set of open subsets of and the set of ideals of provide examples of a (semicartesian) quantale. We study a particular pair of (adjoint) functors between the quantale of open subsets of and the quantale of ideals of , the ring of real-valued continuous functions on . This leads to the main result of this paper: the th Čech cohomology groups of with values on the constant sheaf on is isomorphic to the th Čech cohomology groups of the ring with values on a sheaf on .

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