This paper presents the topology known as isolated flying capacitor multilevel flyback converter (FCMFC). The uses capacitors (FC) for high-gain, DC-DC power conversion while maintaining primary-secondary isolation and improving efficiency capability of a standard transformer circuit. Three converters have been developed tested, one control, 3 level FCMFC, 4 FCMFC to prove gain benefits this ne...

Let G be a finite soluble group given by a reduced confluent polycyclic presentation. Represent group elements by reduced words. Then there exists an algorithm for multiplying two group elements which has subexponential running time and requires polynomial space. Moreover, given the prime factorisation of the group order, the problem of multiplying two group elements is probabilistically polyno...