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Peter
Peter
08:16
CD
Peter
Peter
08:45
CD
 
1 hour later…
SmokeDetector
SmokeDetector
10:06
[ SmokeDetector | MS ] Several emoji in title (95): f(A△ B)=f(A)△f(B) iff f is injective function‭ by Shakshouk‭ on math.SE
[ SmokeDetector | MS ] Several emoji in title (95): $Sin(25°)+Cos(115°)$? ✏️‭ by MaxWill‭ on math.SE
Peter
Peter
10:48
CD
Peter
Peter
11:08
downvote/delete
Peter
Peter
11:18
D
D
 
1 hour later…
Feeds
Feeds
12:46
0
Q: Can any positive even number be expressed as an XOR of two prime numbers?

SegmentTreeI just came up with this question when I was thinking about the Goldbach conjecture. For example, $$2=5 \oplus 7$$ $$4=3 \oplus 7$$ $$6=3 \oplus 5$$ $$8=3 \oplus 11$$ $$10=7 \oplus 13$$ $$12=7 \oplus 11$$ $$14=5 \oplus 11$$ I verified the even numbers up to $10^5$, there weren't any counterexampl...

prime-numbers binary-operations goldbachs-conjecture
José Carlos Santos
José Carlos Santos
13:43
delete 1, 2, 3
 
1 hour later…
user21820
user21820
14:51
Bogus post as already explained by Alex.
SmokeDetector
SmokeDetector
15:41
[ SmokeDetector | MS ] Several emoji in title (95): prove f(A△B)=f(A)△f(B) ⟺ f is injective‭ by Shakshouk‭ on math.SE
user21820
user21820
15:52
D1, D2, D3.
D4, D5, D6.
D7, D8, D9.
D10, D11, D12.
C1, C2, C3.
C4, C5, C6.
C7, C8, C9.
C10, C11, C12.
 
2 hours later…
Peter
Peter
18:11
undelete-vote - I suggest moderators to lock this question

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