1 Subjects: “...differential operator...”

2 Subjects: “...caputo operator...”

3 Subjects: “...sequence operator...”

4 Subjects: “...operational taxonomic unit (OTU)...”

5 Subjects: “...Riemann-Liouville fractional calculus operators...”

6 Subjects: “...distributed-order operators...”

7 Subjects: “...hypoelliptic operators...”

8 Subjects: “...Noether-like operator...”

9 Subjects: “...operating characteristics...”

10 Subjects: “...response amplitude operator (RAO)...”

11 Subjects: “...forestry operation...”

12 Subjects: “...generalized proportional Hadamard fractional integral operator...”

13 Subjects: “...generalized proportional Hadamard fractional integral operator...”

14 Subjects: “...Dickson-Hipp operator...”

15 Subjects: “...support operator method...”

16 Subjects: “...operational cycles...”

17 Subjects: “...discussive operators...”

18 Subjects: “...Fourier neural operator...”