Small reversed element-of, contains sign with a vertical bar at the end of its stroke, a set notation variant.
U+22FBCONTAINS WITH VERTICAL BAR AT END OF HORIZONTAL STROKEU+22FDCONTAINS WITH OVERBARU+22FACONTAINS WITH LONG HORIZONTAL STROKEU+22FESMALL CONTAINS WITH OVERBARU+22F9ELEMENT OF WITH TWO HORIZONTAL STROKESU+22FFZ NOTATION BAG MEMBERSHIPU+22F8ELEMENT OF WITH UNDERBARU+22F7SMALL ELEMENT OF WITH OVERBARU+22F6ELEMENT OF WITH OVERBARU+22F5ELEMENT OF WITH DOT ABOVEU+22F4SMALL ELEMENT OF WITH VERTICAL BAR AT END OF HORIZONTAL STROKEU+22F3ELEMENT OF WITH VERTICAL BAR AT END OF HORIZONTAL STROKE256 characters in the Mathematical Operators Unicode block, from number 253.