Omega

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age 18
visits member for 2 years, 4 months
seen May 7 at 0:55
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'ello fellas!


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Dec
4
 accepted When would I NOT use a double implication when proving equalities between sets?
Dec
4
 asked When would I NOT use a double implication when proving equalities between sets?
Dec
3
 accepted Are these two venn diagrams valid for $(A-B)\cup (B\cap C)$?
Dec
3
 comment Are these two venn diagrams valid for $(A-B)\cup (B\cap C)$?
Wait, if the element could be in both at the same time, the second drawing would make no sense, or would it? I mean, since the two red areas are visually separated, it would be impossible for an element to be in both, no?
Dec
3
 asked Are these two venn diagrams valid for $(A-B)\cup (B\cap C)$?
Dec
2
 accepted Should I perform a disjunctive syllogism directly on three expressions simultaneously?
Dec
2
 asked Should I perform a disjunctive syllogism directly on three expressions simultaneously?
Dec
1
 revised How to “make up a formula” of a sum?
$1+\cdots+n$ instrad of $1+...+n$
Dec
1
 suggested suggested edit on How to “make up a formula” of a sum?
Dec
1
 revised How to “make up a formula” of a sum?
deleted 1 characters in body
Dec
1
 asked How to “make up a formula” of a sum?
Dec
1
 accepted What's wrong with my sum? ($S=1^2+2^2+3^2+\cdots+10000$)
Dec
1
 comment What's wrong with my sum? ($S=1^2+2^2+3^2+\cdots+10000$)
... Oh damn it. You're right, we were given that formula very long ago... now I remember...
Dec
1
 asked What's wrong with my sum? ($S=1^2+2^2+3^2+\cdots+10000$)
Nov
28
 accepted Is saying that $2^n+1<2^n\cdot2$ for $n \in \mathbb N$ is true enough to end the proof?
Nov
28
 comment Is saying that $2^n+1<2^n\cdot2$ for $n \in \mathbb N$ is true enough to end the proof?
@AndréNicolas: Ah, okay. Also, you said positive number - but why should we be excluding the $0$ from the naturals in this scenario?
Nov
28
 comment Is saying that $2^n+1<2^n\cdot2$ for $n \in \mathbb N$ is true enough to end the proof?
I just realized it is wrong. The last expression would not work for $n=0$...
Nov
28
 asked Is saying that $2^n+1<2^n\cdot2$ for $n \in \mathbb N$ is true enough to end the proof?
Nov
28
 accepted Induction: How to prove propositions with universal quantifiers?
Nov
28
 accepted What are linear homogeneous and non-homoegenous recurrence relations?
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