Subtraction of Directed Numbers - Counters Model
- Author:
- Anthony OR 柯志明
Subtracting a directed number by taking away (represented by "×") the "+1" or "−1" counters.
Reference
Kaner, P.A. (1964) 'The addition and subtraction of negative numbers', The Mathematical Gazette, 48(364), 183-185. https://www.jstor.org/stable/3613541