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 Showing results 1 to 4 of 4 Search took 0.00 seconds. Search: Posts Made By: bhelmes
 2021-07-09, 20:32 Replies: 9 Views: 2,338 Posted By bhelmes @Nick, thanks a lot for your work and help. ... @Nick, thanks a lot for your work and help. an useful implementation in c and gmp of tonelli-shanks algorithm is: http://www.codecodex.com/wiki/Shanks-Tonelli_algorithm Let :...
 2021-07-08, 21:18 Replies: 9 Views: 2,338 Posted By bhelmes Let an²+bn+c = 0 mod p If I want to... Let an²+bn+c = 0 mod p If I want to calculate the discriminant, can I first calculate a*=a mod p, b*=b mod p and c*=c mod p and then discr=(b*)²-4a*c* ?
 2021-07-07, 02:56 Replies: 9 Views: 2,338 Posted By bhelmes I did not understand how to find the square of... I did not understand how to find the square of the discriminant b²-4ac mod 4an. b²-4ac is a quadratic residue, but not always a square. :loco:
 2021-07-05, 19:24 Replies: 9 Views: 2,338 Posted By bhelmes an²+bn+c = 0 mod p Let f(n)=an²+bn+c = 0 mod p with n element of N and p prime. n=? Is there a better way than calculating f(n) for n=0 ...p-1 Thanks if you spend me some lines.
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