fred

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age 21
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I'm a dev bi***


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Nov
29
 accepted Why is $x^7 = x$ true for every $x$ in $x ∈ Z/14Z$?
Nov
29
 comment Modular Arithmetic Equations
Got it ! Thanks :)
Nov
29
 accepted Modular Arithmetic Equations
Nov
29
 comment Why is $x^7 = x$ true for every $x$ in $x ∈ Z/14Z$?
Why does it work for 2 and 7 too ?
Nov
29
 comment Why is $x^7 = x$ true for every $x$ in $x ∈ Z/14Z$?
I know. But still don't see how this applies.
Nov
29
 comment Why is $x^7 = x$ true for every $x$ in $x ∈ Z/14Z$?
I'm not sure where this is heading.
Nov
29
 comment Modular Arithmetic Equations
CRT is probably the way to go but not sure how to apply it here.
Nov
29
 asked Why is $x^7 = x$ true for every $x$ in $x ∈ Z/14Z$?
Nov
29
 asked Modular Arithmetic Equations
Nov
15
 comment How many numbers exists that are smaller than $p$ and prime with $p$?
Thanks, in short $3947$ is the answer I was looking for. Euler's totient function clarified my confusion.
Nov
15
 accepted How many numbers exists that are smaller than $p$ and prime with $p$?
Nov
15
 comment How many numbers exists that are smaller than $p$ and prime with $p$?
@JonasKibelbek : I edited the question to be clearer. You're right that it's a different question.
Nov
15
 revised How many numbers exists that are smaller than $p$ and prime with $p$?
edited title
Nov
15
 asked How many numbers exists that are smaller than $p$ and prime with $p$?
Nov
15
 comment How to compute large modulos with pen and paper?
Yeah, any power of 3 greater than will make the remainder 0.
Nov
15
 accepted How to compute large modulos with pen and paper?
Nov
15
 comment How to compute large modulos with pen and paper?
Oh right ! Thanks
Nov
15
 revised How to compute large modulos with pen and paper?
edited body
Nov
15
 comment How to compute large modulos with pen and paper?
I don't see what number is multiple of 3 in the first case.
Nov
15
 comment How to compute large modulos with pen and paper?
I notice the pattern for the first one. But I can't prove why it's accurate to predict so.
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