Abstract
For a J-ring A, each deviation is bounded on Spec A and the morphism of A into the infinite product IIA has almost the contangent complex of a smooth morphism.
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References
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André, M. Reg ouvert et complexe cotangent. Manuscripta Math 60, 171–183 (1988). https://doi.org/10.1007/BF01161927
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DOI: https://doi.org/10.1007/BF01161927