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8h
revised If $r$ is a primitive root of odd prime $p$, prove that $\text{ind}_r (-1) = \frac{p-1}{2}$
added 17 characters in body
8h
revised If $r$ is a primitive root of odd prime $p$, prove that $\text{ind}_r (-1) = \frac{p-1}{2}$
added 252 characters in body
9h
revised If I have a polynomial $x^2(1-m^2) - x2m^2 - (m^2 + 1)$ with a solution at $x = -1$, how do I get the other root
added 49 characters in body
9h
revised If I have a polynomial $x^2(1-m^2) - x2m^2 - (m^2 + 1)$ with a solution at $x = -1$, how do I get the other root
added 418 characters in body
19h
revised $x^2+3$ has two zeros over ${\Bbb F}_p$ provided that $x^2+x+1\in{\Bbb F}_p[x]$ has two?
added 337 characters in body
20h
revised Arrangements of the word ISOMORPHISM
added 47 characters in body
1d
revised Prove that a positive odd integer $N>1$ has a unique representation in the form $N=x^2-y^2$ iff N is prime
deleted 64 characters in body
1d
revised Primitive roots and 'equivalent exponents'.
added 86 characters in body
1d
revised What is the probability that 13 cards drawn from a standard deck has at least one card from each suit?
deleted 1 character in body
1d
revised Every element of field $F_q$ has $k$th root if and only if $\gcd(q-1,k)=1$
added 14 characters in body
2d
revised How to define addition through multiplication?
minor typo fix, "for" changed to "from".
Jan
26
revised Show that $2$ is not prime in $\mathbb Z[\sqrt{-d}]$ for odd prime $d$
added 11 characters in body
Jan
25
revised If $p$ and $q = 2p + 1$ are both odd primes, show that $-4$ and $2(-1)^{(1/2)(p-1)}$ are both primitive roots modulo $q$.
added 541 characters in body
Jan
24
revised If $p$ and $q = 2p + 1$ are both odd primes, show that $-4$ and $2(-1)^{(1/2)(p-1)}$ are both primitive roots modulo $q$.
added 24 characters in body
Jan
24
revised If GCD of a list of numbers is 1, is it a necessary condition that GCD of at least one pair of numbers from the list should be 1?
added 251 characters in body
Jan
24
revised If $p$ and $q = 2p + 1$ are both odd primes, show that $-4$ and $2(-1)^{(1/2)(p-1)}$ are both primitive roots modulo $q$.
added 86 characters in body
Jan
24
revised If $p$ and $q = 2p + 1$ are both odd primes, show that $-4$ and $2(-1)^{(1/2)(p-1)}$ are both primitive roots modulo $q$.
added 20 characters in body
Jan
24
revised If $p$ and $q = 2p + 1$ are both odd primes, show that $-4$ and $2(-1)^{(1/2)(p-1)}$ are both primitive roots modulo $q$.
added 24 characters in body
Jan
23
revised Find a the value of a point on the tangent line
edited body
Jan
23
revised Prove that there no positive integral solution to this equation.
edited body