suture. ( 1 in surgery) a thread or wire used to join together a wound. ( 2 in surgery) the seam found after stitching two parts together. 3  an immovable joint between the bones of the skull. ( in plants) the line of fusion between two carpels.
For other uses, see ( ) (disambiguation). A bracket is a tall punctuation mark typically used in matched pairs within text, to set apart or interject other text. The matched pair may be described as opening and closing, or left and right symbols.
The brackets, {statement}, means the set of all objects which satisfy that statement. The [math]\in[/math] symbol stands for in or is a member of The [math]R[/math] stands for real numbers, and [math]R^2[/math] stands for the real plane. The pipe symbol, |, adds another condition. Think of it as saying and or such that.