Research Article
VDB Entropy Measures and Irregularity-Based Indices for the Rectangular Kekulene System
Table 1
Edge weight- and degree-based entropy.
| | S. no. | Degree-based entropy | Mathematical expressions |
| | 1 | First Zagreb entropy | | | 2 | Second Zagreb entropy | | | 3 | Second modified Zagreb entropy | | | 4 | Reduced second Zagreb entropy | | | 5 | Hyper Zagreb entropy | | | 6 | Augmented Zagreb entropy | | | 7 | Atom bond connectivity entropy | | | 8 | Geometric arithmetic entropy | | | 9 | Symmetric division deg (SDD) entropy | | | 10 | Randić entropy | | | 11 | Forgotten entropy | | | 12 | Sum-connectivity entropy | | | 13 | First redefined Zagreb entropy | | | 14 | Second redefined Zagreb entropy | |
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