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The phrase "a sort of universal homogeneous coordinate ring" is somewhat informal and might be misleading. To me "A is a sort of B" conveys either, formally, that A is a subset of B or informally, that A is akin to or analogous to B. Here I think that Cox ring is best described as a generalisation of the homogeneous coordinate ring, with a universal property. Is it synonymous with total coordinate ring in Hu and Keel (see Cox et al, "Toric varieties", 2011)? If so, should be worth mentioning. Deltahedron ( talk) 07:33, 28 February 2014 (UTC) reply

From Wikipedia, the free encyclopedia

Sort of

The phrase "a sort of universal homogeneous coordinate ring" is somewhat informal and might be misleading. To me "A is a sort of B" conveys either, formally, that A is a subset of B or informally, that A is akin to or analogous to B. Here I think that Cox ring is best described as a generalisation of the homogeneous coordinate ring, with a universal property. Is it synonymous with total coordinate ring in Hu and Keel (see Cox et al, "Toric varieties", 2011)? If so, should be worth mentioning. Deltahedron ( talk) 07:33, 28 February 2014 (UTC) reply


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