Let G be a finite group and N$lhd$G such as p||N| (p dividing the order of N). Then for all P p-sylow subgroup of G, N$cap$P$nee$

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Decide whether the following staement is true of false If true, prove it. If false, provide a counterexample



Let G be a finite group and N$lhd$G such as p||N| (p dividing the order of N). Then for all P p-sylow subgroup of G, N$cap$P$nee$



I think it's false but I don't know how to prove it..
please help :)







share|cite|improve this question

















  • 2




    You really need to stop using the same title for all of your questions.
    – Tobias Kildetoft
    Jul 27 at 5:50










  • Consider the image of $P$ under the projection map $Gto G/N$.
    – Lord Shark the Unknown
    Jul 27 at 5:55










  • The sentence "I think it's false but I don't know how to prove it.. please help :)" is your only contribution to this. Sorry but this is not enough. VTC.
    – Did
    Jul 27 at 6:30










  • I wrote this here because I need help not because I already found an example, I tried to found one before I wrote this here but the one I thought about didn't match every part of the question. You don't have to help me it's your decision but I'd be happy to get help from others that can and want to help
    – user579852
    Jul 27 at 6:35














up vote
-3
down vote

favorite












Decide whether the following staement is true of false If true, prove it. If false, provide a counterexample



Let G be a finite group and N$lhd$G such as p||N| (p dividing the order of N). Then for all P p-sylow subgroup of G, N$cap$P$nee$



I think it's false but I don't know how to prove it..
please help :)







share|cite|improve this question

















  • 2




    You really need to stop using the same title for all of your questions.
    – Tobias Kildetoft
    Jul 27 at 5:50










  • Consider the image of $P$ under the projection map $Gto G/N$.
    – Lord Shark the Unknown
    Jul 27 at 5:55










  • The sentence "I think it's false but I don't know how to prove it.. please help :)" is your only contribution to this. Sorry but this is not enough. VTC.
    – Did
    Jul 27 at 6:30










  • I wrote this here because I need help not because I already found an example, I tried to found one before I wrote this here but the one I thought about didn't match every part of the question. You don't have to help me it's your decision but I'd be happy to get help from others that can and want to help
    – user579852
    Jul 27 at 6:35












up vote
-3
down vote

favorite









up vote
-3
down vote

favorite











Decide whether the following staement is true of false If true, prove it. If false, provide a counterexample



Let G be a finite group and N$lhd$G such as p||N| (p dividing the order of N). Then for all P p-sylow subgroup of G, N$cap$P$nee$



I think it's false but I don't know how to prove it..
please help :)







share|cite|improve this question













Decide whether the following staement is true of false If true, prove it. If false, provide a counterexample



Let G be a finite group and N$lhd$G such as p||N| (p dividing the order of N). Then for all P p-sylow subgroup of G, N$cap$P$nee$



I think it's false but I don't know how to prove it..
please help :)









share|cite|improve this question












share|cite|improve this question




share|cite|improve this question








edited Jul 27 at 8:54
























asked Jul 27 at 5:47









user579852

305




305







  • 2




    You really need to stop using the same title for all of your questions.
    – Tobias Kildetoft
    Jul 27 at 5:50










  • Consider the image of $P$ under the projection map $Gto G/N$.
    – Lord Shark the Unknown
    Jul 27 at 5:55










  • The sentence "I think it's false but I don't know how to prove it.. please help :)" is your only contribution to this. Sorry but this is not enough. VTC.
    – Did
    Jul 27 at 6:30










  • I wrote this here because I need help not because I already found an example, I tried to found one before I wrote this here but the one I thought about didn't match every part of the question. You don't have to help me it's your decision but I'd be happy to get help from others that can and want to help
    – user579852
    Jul 27 at 6:35












  • 2




    You really need to stop using the same title for all of your questions.
    – Tobias Kildetoft
    Jul 27 at 5:50










  • Consider the image of $P$ under the projection map $Gto G/N$.
    – Lord Shark the Unknown
    Jul 27 at 5:55










  • The sentence "I think it's false but I don't know how to prove it.. please help :)" is your only contribution to this. Sorry but this is not enough. VTC.
    – Did
    Jul 27 at 6:30










  • I wrote this here because I need help not because I already found an example, I tried to found one before I wrote this here but the one I thought about didn't match every part of the question. You don't have to help me it's your decision but I'd be happy to get help from others that can and want to help
    – user579852
    Jul 27 at 6:35







2




2




You really need to stop using the same title for all of your questions.
– Tobias Kildetoft
Jul 27 at 5:50




You really need to stop using the same title for all of your questions.
– Tobias Kildetoft
Jul 27 at 5:50












Consider the image of $P$ under the projection map $Gto G/N$.
– Lord Shark the Unknown
Jul 27 at 5:55




Consider the image of $P$ under the projection map $Gto G/N$.
– Lord Shark the Unknown
Jul 27 at 5:55












The sentence "I think it's false but I don't know how to prove it.. please help :)" is your only contribution to this. Sorry but this is not enough. VTC.
– Did
Jul 27 at 6:30




The sentence "I think it's false but I don't know how to prove it.. please help :)" is your only contribution to this. Sorry but this is not enough. VTC.
– Did
Jul 27 at 6:30












I wrote this here because I need help not because I already found an example, I tried to found one before I wrote this here but the one I thought about didn't match every part of the question. You don't have to help me it's your decision but I'd be happy to get help from others that can and want to help
– user579852
Jul 27 at 6:35




I wrote this here because I need help not because I already found an example, I tried to found one before I wrote this here but the one I thought about didn't match every part of the question. You don't have to help me it's your decision but I'd be happy to get help from others that can and want to help
– user579852
Jul 27 at 6:35










1 Answer
1






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up vote
0
down vote













Let $p, q$ be distinct prime numbers. Consider $mathbbZ/pmathbbZtimesmathbbZ/qmathbbZ$, $N=mathbbZ/pmathbbZtimes0$ and $P=0timesmathbbZ/qmathbbZ$.






share|cite|improve this answer























  • Your $P$ is not a $p$-Sylow subgroup.
    – Lord Shark the Unknown
    Jul 27 at 10:36










  • how do I prove that N is normal and that P is p-sylow? and what is the order of N? does p dividing this order?
    – user579852
    Jul 31 at 11:59










  • @Tsemo Aristide hi can you explain to me why $Nlhd G$?
    – user579852
    Aug 4 at 6:42










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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes








up vote
0
down vote













Let $p, q$ be distinct prime numbers. Consider $mathbbZ/pmathbbZtimesmathbbZ/qmathbbZ$, $N=mathbbZ/pmathbbZtimes0$ and $P=0timesmathbbZ/qmathbbZ$.






share|cite|improve this answer























  • Your $P$ is not a $p$-Sylow subgroup.
    – Lord Shark the Unknown
    Jul 27 at 10:36










  • how do I prove that N is normal and that P is p-sylow? and what is the order of N? does p dividing this order?
    – user579852
    Jul 31 at 11:59










  • @Tsemo Aristide hi can you explain to me why $Nlhd G$?
    – user579852
    Aug 4 at 6:42














up vote
0
down vote













Let $p, q$ be distinct prime numbers. Consider $mathbbZ/pmathbbZtimesmathbbZ/qmathbbZ$, $N=mathbbZ/pmathbbZtimes0$ and $P=0timesmathbbZ/qmathbbZ$.






share|cite|improve this answer























  • Your $P$ is not a $p$-Sylow subgroup.
    – Lord Shark the Unknown
    Jul 27 at 10:36










  • how do I prove that N is normal and that P is p-sylow? and what is the order of N? does p dividing this order?
    – user579852
    Jul 31 at 11:59










  • @Tsemo Aristide hi can you explain to me why $Nlhd G$?
    – user579852
    Aug 4 at 6:42












up vote
0
down vote










up vote
0
down vote









Let $p, q$ be distinct prime numbers. Consider $mathbbZ/pmathbbZtimesmathbbZ/qmathbbZ$, $N=mathbbZ/pmathbbZtimes0$ and $P=0timesmathbbZ/qmathbbZ$.






share|cite|improve this answer















Let $p, q$ be distinct prime numbers. Consider $mathbbZ/pmathbbZtimesmathbbZ/qmathbbZ$, $N=mathbbZ/pmathbbZtimes0$ and $P=0timesmathbbZ/qmathbbZ$.







share|cite|improve this answer















share|cite|improve this answer



share|cite|improve this answer








edited Jul 27 at 6:32


























answered Jul 27 at 5:58









Tsemo Aristide

50.9k11143




50.9k11143











  • Your $P$ is not a $p$-Sylow subgroup.
    – Lord Shark the Unknown
    Jul 27 at 10:36










  • how do I prove that N is normal and that P is p-sylow? and what is the order of N? does p dividing this order?
    – user579852
    Jul 31 at 11:59










  • @Tsemo Aristide hi can you explain to me why $Nlhd G$?
    – user579852
    Aug 4 at 6:42
















  • Your $P$ is not a $p$-Sylow subgroup.
    – Lord Shark the Unknown
    Jul 27 at 10:36










  • how do I prove that N is normal and that P is p-sylow? and what is the order of N? does p dividing this order?
    – user579852
    Jul 31 at 11:59










  • @Tsemo Aristide hi can you explain to me why $Nlhd G$?
    – user579852
    Aug 4 at 6:42















Your $P$ is not a $p$-Sylow subgroup.
– Lord Shark the Unknown
Jul 27 at 10:36




Your $P$ is not a $p$-Sylow subgroup.
– Lord Shark the Unknown
Jul 27 at 10:36












how do I prove that N is normal and that P is p-sylow? and what is the order of N? does p dividing this order?
– user579852
Jul 31 at 11:59




how do I prove that N is normal and that P is p-sylow? and what is the order of N? does p dividing this order?
– user579852
Jul 31 at 11:59












@Tsemo Aristide hi can you explain to me why $Nlhd G$?
– user579852
Aug 4 at 6:42




@Tsemo Aristide hi can you explain to me why $Nlhd G$?
– user579852
Aug 4 at 6:42












 

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