The theory of elliptic curves with large endomorphism rings. For questions on multiplication of complex numbers, use (complex-numbers) instead.
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Is Multiplication A System?
I don't understand how to identify the properties of a system.
What possible properties could a system have?
Are a certain number of properties required in order to be classified as a system?
The ...
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Recursive FFT java implementation
Given below is my java program for FFT. For the input {0,2,3,-1} its returns a false output in complex point representation.
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What numbers are integrally represented by $4 x^2 + 2 x y + 7 y^2 - z^3$
EDIT: a selection of material relevant to this problem is available at INHOMOGENEOUS
In December 2010 my question appeared in the M.A.A. Monthly, show that $4 x^2 + 2 x y + 7 y^2 - z^3 \neq \pm 2 ...
