Timeline for How to add two numbers from a group theoretic perspective?
Current License: CC BY-SA 4.0
19 events
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| Jan 29, 2020 at 6:03 | comment | added | user6671 | @SebastienPalcoux thanks for the hint to your question. | |
| Jan 29, 2020 at 5:52 | comment | added | Sebastien Palcoux | @orgesleka: mathoverflow.net/q/351398/34538 | |
| Jan 29, 2020 at 4:54 | comment | added | user6671 | @SebastienPalcoux the question is open in the sense that for cyclic groups we should get the usual addition, so if you have an idea how to extend this to other finite groups, that would be great. | |
| Jan 29, 2020 at 4:12 | comment | added | user6671 | @SebastienPalcoux I am not sure which functor you mean | |
| Jan 28, 2020 at 15:08 | comment | added | user6671 | @BertramArnold yes, they are isomorphic as groups, but the norm is not additive at the natural numbers. | |
| Jan 28, 2020 at 0:49 | comment | added | user6671 | @BertramArnold thanks for yout comment. | |
| Jan 27, 2020 at 20:33 | comment | added | Bertram Arnold | Your group structure on $\mathbb Z\times G$ is isomorphic to the usual one via $f:(n,a)\mapsto (n + |a|,a)$: You defined it as the central extension corresponding to the cocycle $\phi$ which by definition is the coboundary of $a\mapsto |a|$. | |
| Jan 26, 2020 at 8:45 | history | edited | user6671 | CC BY-SA 4.0 |
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| Jan 25, 2020 at 20:39 | history | edited | user6671 | CC BY-SA 4.0 |
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| Jan 25, 2020 at 19:25 | vote | accept | CommunityBot | ||
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| Jan 25, 2020 at 15:09 | history | edited | user6671 | CC BY-SA 4.0 |
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| Jan 25, 2020 at 14:53 | history | edited | user6671 | CC BY-SA 4.0 |
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| Jan 25, 2020 at 13:46 | history | edited | user6671 | CC BY-SA 4.0 |
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| Jan 25, 2020 at 12:42 | history | edited | user6671 | CC BY-SA 4.0 |
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| Jan 25, 2020 at 12:26 | history | answered | user6671 | CC BY-SA 4.0 |