¶ Number
← Number: Tetrahedral Number: N² - N / 2 | Number: Tetrahedral Number: N² - N / 2 →
Index Entry
Tetrahedral Number: N² - N :
"The number of relationships between items
Is always N² - N .
2
The relationships between four or more items
Are always greater in number
Than the number of items.
¶ Citations
- HOW LITTLE, p. 56 , Oct’66
