rule minimizes the appropriate energy and the update rule will converge at some point which means that we can you know if it converges we can retrieve the pattern that it converges to so now we define how many patterns can we actually store for that we need to know what does it mean for a pattern to be stored so we assume that we have patterns and these patterns are called x okay x i we have n different patterns each one is called um x with a subscript we assume that around every pattern a sphere is given so how do we imagine this um