An Etymological Dictionary of Astronomy and Astrophysics
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Any number of the form u = a + bi, where a and b are → real numbers and i imaginary, i.e. i² = -1.

→ complex; → number.

The conjugate of a → complex number, expressed by ū = a - bi. The complex number and its conjugate have the same real part. Same as → complex conjugate.

→ conjugate; → complex; → number.