Re:When physics meets biology: a less known Feynman
by sykh on Thursday May 17, 2018 @03:36PM
(#17094733)
A ring is a set. So is a group. At least this is how almost every working commutative algebraist views things. Category theory and its like are gaining traction but the objects are still viewed as sets.
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Re:When physics meets biology: a less known Feynman
by throwaway37585 on Thursday May 17, 2018 @05:59PM
(#17096390)
> A ring is a set.
No. It is a set together with additional structure. Without this additional structure you just have a set, not a ring.
> So is a group.
Again, no. It is a set together with additional structure.
Note: The collection of all groups is not even a set!