Timeline for Inclusion–exclusion principle; what is $(-1)^{n+1}$
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Apr 14, 2022 at 17:29 | history | edited | RobPratt |
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| Apr 14, 2022 at 14:36 | answer | added | user2661923 | timeline score: 1 | |
| Apr 14, 2022 at 13:50 | vote | accept | ManOnTheMoon | ||
| Apr 14, 2022 at 13:48 | comment | added | Jean Marie | @Mauro ALLEGRANZA It is true that the OP hasn't mentionned that. But I think that for him/her it's implicit. The more general framework in which we have such a formula is measure theory with application in probability... but I don't think this was the target of the question. | |
| Apr 14, 2022 at 13:43 | history | edited | Mauro ALLEGRANZA |
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| Apr 14, 2022 at 13:38 | answer | added | Ian | timeline score: 3 | |
| Apr 14, 2022 at 13:36 | comment | added | Mauro ALLEGRANZA | Plus and minus, according to the parity of $n$. You have to consider that the "equation" is about number of elements of sets; thus, the formula is a sum. | |
| Apr 14, 2022 at 13:34 | history | asked | ManOnTheMoon | CC BY-SA 4.0 |