Open tirix opened 7 months ago
what is the double arrow from "Neutral element" to "Set" ? Probably a glitch ?
The blue arrows are for structure components/properties, and the bold arrows for subset relationships. The fact that a neutral element is an element of the base set is a membership relation, so none of the above. It's not used elsewhere so maybe I should simply remove it.
The fact that a neutral element is an element of the base set is a membership relation, so none of the above. It's not used elsewhere so maybe I should simply remove it.
Ah, I see. Yes, I think removing it makes the picture clearer. The "Ring Unit" is also an element, and the other circles are functions from the base set to the base set. I think it is not necessary to indicate these relations.
In addition to df-sgrp, there are also some 404 links due to label changes:
df-rng --> df-ring df-preset --> df-proset
(Technically there is a ringLMod arrow from Ring to LMod and CRing to AssAlg, but it seems too complicated to add under the current design)
There is also an arrow from https://us.metamath.org/mpeuni/df-rng0.html to Abel because of the definition but I'm not sure if this is standard
There is also an arrow from https://us.metamath.org/mpeuni/df-rng0.html to Abel because of the definition but I'm not sure if this is standard
That's the one in the initial post of this issue, isn't it ?
After the link in the "Structures" page is corrected, @avekens's ~df-rng0 can probably be relabeled df-rng (after having checked that the label/label-root for rings is indeed ring
everywhere, and not rng
).
@avekens : for rng morphisms, I would use the token and symbol RngHom
instead of RngHomo
: the latter is very uncommon (the "Homo" part does not make me think of morphisms, but rather of homo sapiens, homo habilis and friends !).
As mentioned by @benjub in #3801 :