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Feet, pius, plusses and augends, we discuss it all in today's lookback at plus plus its predecessors. Complete with printed out memes and stupid jokes, I hope you'll enjoy today's chat on one of math's most ubiquitous symbols. The history of the addition sign is every bit as thrilling as you'd expect. We discuss bitwise xor, mixed numbers, sigma notation, Robert Recorde, the key properties of addition, and vector and matrix addition. #maths #mathematics #math More math chats:    • Math Chats   Join Wrath of Math to get exclusive videos, lecture notes, and more:    / @wrathofmath   Textbooks I Like! Graph Theory: https://amzn.to/3JHQtZj Real Analysis: https://amzn.to/3CMdgjI Abstract Algebra: https://amzn.to/3IjoZaO Linear Algebra: https://amzn.to/43xAWEz Calculus: https://amzn.to/3PieD1M Proofs and Set Theory: https://amzn.to/367VBXP (available for free online) Statistics: https://amzn.to/4d5HbUQ Discrete Math: https://amzn.to/3qfhoUn Number Theory: https://amzn.to/3JqpOQd Algebra 1: https://amzn.to/3Z4SPvu Algebra 2: https://amzn.to/3LWC7XD Precalculus: https://amzn.to/4fO4On9 ★DONATE★ ◆ Support Wrath of Math on Patreon:   / wrathofmathlessons   ◆ Donate on PayPal: https://www.paypal.me/wrathofmath Outro music available for channel members. Follow Wrath of Math on... ● Instagram:   / wrathofmathedu   ● TikTok:   / wrathofmathedu   ● X: https://x.com/wrathofmathedu 0:00 Intro 1:43 Adding with No Plus 4:31 Rhind Papyrus 6:10 p 6:55 + 8:32 + Today 11:07 Key Properties 13:01 Other +s