Timeline for Between abstract and concrete: What's the right way to think of specific categories?
Current License: CC BY-SA 2.5
2 events
| when toggle format | what | by | license | comment | |
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| Jan 23, 2010 at 14:54 | comment | added | Hans-Peter Stricker | If I think of $\mathbb{Z}$'s standard model (pairs of naturals in the von Neumann standard model) I would firstly think of the group $\mathbb{Z}/3\mathbb{Z}$ as a set consisting of three equivalence classes on $\mathbb{Z}$ and after that I would abstract from this model and think of the group abstractly (like you do in 1). It never would come into my mind, to think of this group as in 2. | |
| Jan 22, 2010 at 15:45 | history | answered | Reid Barton | CC BY-SA 2.5 |