| Subject | English | Polish |
| math. | delta-index | delta-indeks (Giniego) |
| math. | delta-index | indeks koncentracji |
| math. | delta-index | δ-indeks (Giniego) |
| math. | delta-index of Gini | delta-indeks (Giniego) |
| math. | delta-index of Gini | indeks koncentracji |
| math. | delta-index of Gini | δ-indeks (Giniego) |