Weakly Preferred Set(弱偏好集) 2 WP(x), the set of X\bundles weakly preferred to x. WP(X) includes (x)
Weakly Preferred Set (弱偏好集) x2 x1 WP(x), the set of bundles weakly preferred to x. WP(x) includes I(x). x I(x)
Strictly Preferred Set(严格偏好集) 2 ISP(x), the set of BUndles strictly preferred to x, does not include (x)
Strictly Preferred Set (严格偏好集) x2 x1 SP(x), the set of bundles strictly preferred to x, does not include I(x). x I(x)