Explicit characteristic polynomial for complex unit gain dumbbell graphs D_{r,s,ℓ} enables solving extremal energy problems in all parity cases except the minimum when r, s, and ℓ are all odd.
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On the Extremal Energy of Complex Unit Gain Dumbbell Graphs
Explicit characteristic polynomial for complex unit gain dumbbell graphs D_{r,s,ℓ} enables solving extremal energy problems in all parity cases except the minimum when r, s, and ℓ are all odd.