Where does “tridiagonality” come from?
tridiagonality (English) comes from English diagonality, from English diagonal, from Middle French diagonal, from Latin diagōnālis, from Ancient Greek διαγώνιος, from Ancient Greek δῐᾰ-, from Ancient Greek διά, from Proto-Indo-European dwís — two.
tridiagonality (English): The condition (of a matrix) of being tridiagonal
Definitions
- The condition (of a matrix) of being tridiagonal
Ancestry of “tridiagonality”, step by step
tridiagonality traces back through two separate lines of ancestry.
via English diagonality
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | diagonality | The condition of being diagonal |
| 2 | English | diagonal | Joining two nonadjacent vertices; Having slanted... |
| 3 | Middle French | diagonal | — |
| 4 | Latin | diagōnālis | diagonal |
| 5 | Ancient Greek | διαγώνιος | from angle to angle |
| 6 | Ancient Greek | δῐᾰ- | apart; through, across; through; in different... |
| 7 | Ancient Greek | διά | throughout |
| 8 | Proto-Indo-European | dwís | twice, doubly; in two |
| 9 | Proto-Indo-European | dwóh₁ | two |