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University of Nevada: Ask the Professor - Why Do We Use a Sideways 8 to Represent Infinity?
November 14, 2025
RENO, Nevada, Nov. 14 -- The University of Nevada issued the following Q&A on Nov. 13, 2025, by Michelle Werdann, with math professor Raul Rojas:

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Ask the Professor: Why do we use a sideways 8 to represent infinity?

Math professor explores symbology of math

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"Why are these symbols in my math problem?"

It's a complaint many algebra teachers are familiar with, as more letters and symbols are intr . . .

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