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Orchid XP v8 wrote:
> Number of atoms? (Or sometimes ions, or subatomic particles of some
> kind. Make sure you specify; it kinda makes a difference.)
12 grams of carbon-12. Avagadro's number is the number of neutrons in one
gram of neutrons. 1/A is the weight of a neutron.
They specify "carbon 12" because not all neutrons weigh the same amount, due
to E=Mc^2.
> There's a whole zoo of algebraic systems (I think that's the term) -
> monoids, semigroups, groupoids, groups, rings, fields, etc. They're all
> essentially the same "thing", just with differing numbers of properties
> guaranteed.
Right. I'd have to go look up the details.
> Personally, I only bother with fields and groups. A group is closed,
> associative, and possesses a unique identity element and an inverse
> element for every member. An Abelien group or commutative group is...
> self-explanatory, actually?
That was my memory, yes.
--
Darren New, San Diego CA, USA (PST)
Insanity is a small city on the western
border of the State of Mind.
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