We study properties of unions $X \cup Y$ of closed susbschemes of ${\pp}^r$ where $X$ is arithmetically Cohen-Macaulay of codimension $2.$ In particular, we are interested on the homological dimension of such a scheme. We apply our results to special schemes which arise as union of linear varieties.
A structure theorem for unions of complete intersections
RAGUSA, Alfio;ZAPPALA', Giuseppe
2012-01-01
Abstract
We study properties of unions $X \cup Y$ of closed susbschemes of ${\pp}^r$ where $X$ is arithmetically Cohen-Macaulay of codimension $2.$ In particular, we are interested on the homological dimension of such a scheme. We apply our results to special schemes which arise as union of linear varieties.File in questo prodotto:
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