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Algebraic varieties, stacks, sheaves, schemes, moduli spaces, complex geometry, quantum cohomology.

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Quadratic twist of an elliptic curve given by Weierstrass model [closed]

What is the equation of quadratic twist of Weierstrass curve over prime field GF(p) if p mode 4 = 1 or 3 if we want to have isomorphism over GF(p)? What is the equation for binary field ? Thanks.
Savad Rudbar's user avatar