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- ...>i</math>. Often, the extension <math>\mathcal{E}</math> is written as the diagram <math>\mathcal{E} : F \stackrel{i}{\to} E \stackrel{p}{\to} G</math>. ...ath>E</math>; this is only possible if <math>F</math> is [[abelian group | commutative]]. It is called ''trivial'' if <math>E = F \times G</math> (the direct pro5 KB (901 words) - 19:53, 27 May 2008
- ...n can also be expressed by saying that the following diagram [[Commutative diagram|commutes]]:1 KB (201 words) - 21:16, 2 September 2008
- <math> \mathrm{(A)\ } \text{``*" is commutative but not associative} \qquad </math> <math> \mathrm{(B) \ }\text{``*" is associative but not commutative} \qquad </math>15 KB (2,151 words) - 13:04, 19 February 2020
- //Credit to chezbgone2 for the diagram</asy> <math>\textbf{(A) }\ast\text{ is commutative over }S \qquad18 KB (2,705 words) - 18:08, 6 August 2024