A curve "E" defined over the field of rational numbers is also defined over the field of real numbers, therefore the law of addition (of points with real coordinates) by the tangent and secant method can be applied to "E".
Therefore the law of addition (of points with real coordinates) by the tangent and secant method can be applied to "E". A curve "E" defined over the field of rational numbers is also defined over the field of real numbers.
A curve "E" defined over the field of rational numbers is also defined over the field of real numbers. Therefore the law of addition (of points with real coordinates) by the tangent and secant method can be applied to "E".
A curve "E" defined over the field of rational numbers is also defined over the field of real numbers. Therefore the law of addition (of points with real coordinates) by the tangent and secant method can be applied to "E".