How Can the Hysteresis Loop of the Ideal Memristor Be Pinched?

The hysteresis loop pinched at the origin of the v-i characteristic is the well-known fingerprint of the memristor excited by sinusoidal signal. This brief generalizes the present knowledge of the parameters of the pinched hysteresis loop for a periodical zero-dc driving signal described by an odd function of time. This brief concurrently brings new relationships between the parameter versus state map characteristics, the type of the excitation, and the type of loop pinching.