A Window to a New World of Math
youtube.com
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"A playful venture into the vast and mysterious forests of combinatorial game theory."
When Al-Khwarizmi explain Al-Jabr, he was using Islamic family inheritance analogy. In world of number, Imaginary and negative also were poorly understood at the beginning. Imaginary number was a derogatory term and regarded as fictitious or useless. However, in the journey of Math, new concept of number usually unlock new knowledge even useful for other field of science. IMO surreal numbers in the video somehow will unlock another new fields.