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Showing 1 to 4 of 4 for “"j-invariant"”.
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Algebraic Curves Over Supersimple Fields
… curve defined over a supersimple field K whose j-invariant is s-generic over empty has a rational point over K which is s-generic over the set of parameters used to define the curve. Note that a point in a variety over K is s-generic over a given set of parameters A if the SU-rank of the point …
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L-functions of twisted elliptic curves over function fields
… for which we present a novel algorithm. If the j-invariant of an elliptic curve over a function field is non-constant, its L-function is a polynomial, hence its analytic rank and value at a given point can be computed exactly. We present data in this direction for a family of quadratic twists of …
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Nonequilibrium transitions in quantum optical systems
… lifetime the system can be described by a J²-invariant Hamiltonian, giving the special case of only collective damping. The result is a new type of critical point transition in the thermodynamic limit, with the appearance of a family of solutions like Lotka-Volterra cycles for a coherent …
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Primes of the form X² + nY² in function fields
Let n be a square-free polynomial over F_q, where q is an odd prime power. In this work, we determine which irreducible polynomials p in F_q[x] can be represented in the form X^2+nY^2 with X, Y in F_q[x]. We restrict ourselves to the case where X^2+nY^2 is anisotropic at infinity. As in the …