Timeline for Graphs associated to the mathematical structures
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
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| Sep 17, 2017 at 7:29 | comment | added | Peter Heinig | [...] and on p. 246, the dotted horizontal lines are not aligned with the solid horizontal lines. I know this is 'mere' typography. To your example: this is certainly interesting, but where is the 'ring-theoretic property' here? How does a "singularity of a real analytic curve" correspond to a ring-theoretic property? Traditional ring-theoretic properties studied in commutative algebra are, e.g., Artinian-ness, Cohen-Macaulay-ness, Gorenstein-ness, Noetherian-ness, ... On a cursory reading of Ghys' examples, I don't see a ring-theoretic property(=isomorphism-invariant class of rings).... | |
| Sep 17, 2017 at 7:24 | comment | added | Peter Heinig | Ghys' book seems amazing. I head not heard of it, perhaps simply because it is so new. (Seems to have been published this year.) It seems to be a 'Book 2.0', or maybe,'Book -1.0' (i.e., approaching a medieval illuminated manuscript, at least as far as craftsmanship is concerned). I only had time to briefly dip into it, and already found two minuscule imperfections: on p. 14 the rationales for whether to draw arrows on or below a dot seem to contradict one another in the two illustrations in the margin, [...] | |
| Sep 16, 2017 at 18:19 | history | answered | coudy | CC BY-SA 3.0 |