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Complex numbers Zbyněk Kubáček How they originated and what are complex numbers .. The first mention of the square root of the number -1 is from the mid-16th century, but the first geometric interpretation of complex numbers did not arise until two centuries later. The author is the Norwegian surveyor Caspar Wessel and the basic idea is very nice. ------------------ / matfyzjein / matfyzjein / matfyzjein http://www.fmph.uniba.sk/ Faculty of Mathematics, Physics, and Informatics Comenius University, Bratislava .. #veda #matematika #matfyz #prednaska #vedomosti #vysokaskola #comeniusuniversity #university #math #science