In the archaic terminology of Whittaker and Watson (1990), the complex number representing .
Affix
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References
Whittaker, E. T. and Watson, G. N. A Course in Modern Analysis, 4th ed. Cambridge, England: Cambridge University Press, 1990.Referenced on Wolfram|Alpha
AffixCite this as:
Weisstein, Eric W. "Affix." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Affix.html