## Arithmetic with H = -1: subtraction, negative numbers, division, rationals and mixed numbers

*Colignatus, Thomas*;

Related identifiers: , - Subject: mathematics education | kindergarten | elementary school | highschool | Common Core | H = -1 | negative number | fraction | mixed number | power | exponent | additive inverse | multiplicative inverse | Mathematica | Wolfram language | programming | package | 97M70 Mathematics education. Behavioral and social sciences [MSC2010]

H = -1 is an universal constant. H represents a half turn along a circle, like complex number i represents a quarter turn. Kids know what it is to turn around and walk back along the same path. H creates the additive inverse with x + H x = 0 and the multiplicative inver... View more