838 reputation
517
bio website google.pl
location
age 20
visits member for 3 years, 4 months
seen Aug 18 at 15:18

:)


Jul
4
accepted When does $(a,b) \to (2a, b-a)$ terminate? ($a \leq b$)
Jul
2
awarded  Curious
Jul
2
awarded  Inquisitive
Jul
1
asked When does $(a,b) \to (2a, b-a)$ terminate? ($a \leq b$)
May
21
comment Help me calculating chromatic polynomial of this subgraph
Oh i see! Thank you again!
May
21
comment Help me calculating chromatic polynomial of this subgraph
intersection of second case is $K_2$ and $K_1$. Is there a way of calculating such stuff? I mean if intersection are some cliques? I know that it's easy to calculate straightforwardly this polynomial, but i'm just curious:)
May
21
comment Help me calculating chromatic polynomial of this subgraph
nvm i wrote something wrong
May
21
comment Help me calculating chromatic polynomial of this subgraph
Hey thank you for this approach. I like it very much :)
May
20
awarded  Popular Question
May
19
accepted Help me calculating chromatic polynomial of this subgraph
May
19
comment Help me calculating chromatic polynomial of this subgraph
Oh snap! You are right :-) Thank you, it's very smart
May
19
comment Help me calculating chromatic polynomial of this subgraph
Thank you for your answer, but i have doubts. You assume B and E has the same color -> $x-1$ colors for $B$ and $E$, but you assign $x-1$ colors to $D$ too... Why can we do that? Won't it collide?
May
19
asked Help me calculating chromatic polynomial of this subgraph
May
15
accepted How to show $2^{k+2}$ divides $3^{2^k}-1$ but $2^{k+3}$ doesn't?
May
14
asked How to show $2^{k+2}$ divides $3^{2^k}-1$ but $2^{k+3}$ doesn't?
May
14
accepted How to show $(n-1)^3n^3(n+1)^3$ is divisible by 7 and 9?
May
14
comment How to show $(n-1)^3n^3(n+1)^3$ is divisible by 7 and 9?
Oh... Yes, you are right! But could you help me with my idea? Is it possible to do this like that? I'd love to learn something new :-)
May
14
comment How to show $(n-1)^3n^3(n+1)^3$ is divisible by 7 and 9?
@Alessandro thanks, it was a typo in the title, sorry! Actually i'm solving a task that this polynomial is divisble by 504. Would it mean it can't be true, because it's not divisible by 7?
May
14
revised How to show $(n-1)^3n^3(n+1)^3$ is divisible by 7 and 9?
edited title
May
14
asked How to show $(n-1)^3n^3(n+1)^3$ is divisible by 7 and 9?