Square subset sign with a slashed equals bar below, meaning square image of but not equal to, a strict square subset.
U+22E3NOT SQUARE ORIGINAL OF OR EQUAL TOU+22E5SQUARE ORIGINAL OF OR NOT EQUAL TOU+22E2NOT SQUARE IMAGE OF OR EQUAL TOU+22E6LESS-THAN BUT NOT EQUIVALENT TOU+22E1DOES NOT SUCCEED OR EQUALU+22E7GREATER-THAN BUT NOT EQUIVALENT TOU+22E0DOES NOT PRECEDE OR EQUALU+22E8PRECEDES BUT NOT EQUIVALENT TOU+22DFEQUAL TO OR SUCCEEDSU+22E9SUCCEEDS BUT NOT EQUIVALENT TOU+22DEEQUAL TO OR PRECEDESU+22EANOT NORMAL SUBGROUP OF256 characters in the Mathematical Operators Unicode block, from number 229.
U+22E4SQUARE IMAGE OF OR NOT EQUAL TOU+22E5SQUARE ORIGINAL OF OR NOT EQUAL TOU+22E6LESS-THAN BUT NOT EQUIVALENT TOU+22E7GREATER-THAN BUT NOT EQUIVALENT TOU+22E8PRECEDES BUT NOT EQUIVALENT TOU+22E9SUCCEEDS BUT NOT EQUIVALENT TOU+22EANOT NORMAL SUBGROUP OFU+22EBDOES NOT CONTAIN AS NORMAL SUBGROUPU+22ECNOT NORMAL SUBGROUP OF OR EQUAL TOU+22EDDOES NOT CONTAIN AS NORMAL SUBGROUP OR EQUALU+22EEVERTICAL ELLIPSISU+22EFMIDLINE HORIZONTAL ELLIPSISU+22F0UP RIGHT DIAGONAL ELLIPSISU+22F1DOWN RIGHT DIAGONAL ELLIPSISU+22F2ELEMENT OF WITH LONG HORIZONTAL STROKEU+22F3ELEMENT OF WITH VERTICAL BAR AT END OF HORIZONTAL STROKEU+22F4SMALL ELEMENT OF WITH VERTICAL BAR AT END OF HORIZONTAL STROKEU+22F5ELEMENT OF WITH DOT ABOVEU+22F6ELEMENT OF WITH OVERBARU+22F7SMALL ELEMENT OF WITH OVERBARU+22F8ELEMENT OF WITH UNDERBARU+22F9ELEMENT OF WITH TWO HORIZONTAL STROKESU+22FACONTAINS WITH LONG HORIZONTAL STROKEU+22FBCONTAINS WITH VERTICAL BAR AT END OF HORIZONTAL STROKEU+22FCSMALL CONTAINS WITH VERTICAL BAR AT END OF HORIZONTAL STROKEU+22FDCONTAINS WITH OVERBARU+22FESMALL CONTAINS WITH OVERBARU+22FFZ NOTATION BAG MEMBERSHIP