In one model, the product of velocity and this phenomenon’s namesake “displacement” is an argument of the signum function. That equation for the restoring force over time is part of a model for this phenomenon named after Bouc and Wen. Examining this phenomenon on a (15[1])microscopic level shows a series of random (-5[1])fluctuations (-5[1])called Barkhausen jumps that (-5[1])usually occur (-5[1])in (-5[1])(*) ferromagnets. (-5[1])Laminated cores mitigate energy loss due (-5[1])to eddy (-5[1])currents and this phenomenon’s namesake “loss.” (-5[2])Pinched forms of this phenomenon are displayed in memristors. The relationship between the induced magnetic flux density and the magnetizing force is called this phenomenon’s namesake “loops.” (10[2]-5[1])For 10 points, name this phenomenon (10[1])in which a system’s state (10[1])depends on its history. ■END■ (10[9]0[10])