This work addresses the analysis and characterization of deadlocks in discrete-event systems modeled by labeled Petri nets (LPNs) with undistinguishable and unobservable transitions. To provide a solution for the notorious problem. it is essential to present an effective characterization in such a way that deadlock control and synthesis are technically and methodologically possible. T... https://parisnaturalfoodes.shop/product-category/roller-relief-massager/