pellman
Jun28-09, 02:17 PM
I am coming across a notation in a math text whose form and context suggest it is something like a direct product. The symbol is a multiplication X with a vertical line connecting the two left side ends. Can someone identify this symbol please?
The context can be seen here http://books.google.com/books?id=3JXJ_o70imkC&pg=PA83&lpg=PA83&dq=folland+quantum+field+theory+tourists+%22this+w as+first+accomplished+by+wigner%22&source=bl&ots=hG-CCs2R-k&sig=l3x5V1kd-PrRec-GYxnKpLqrDlU&hl=en&ei=V7NHSs2yHYqONqCQrZcB&sa=X&oi=book_result&ct=result&resnum=1 2/3rds the way down on the page. This is an online preview of the text I am reading.
The context can be seen here http://books.google.com/books?id=3JXJ_o70imkC&pg=PA83&lpg=PA83&dq=folland+quantum+field+theory+tourists+%22this+w as+first+accomplished+by+wigner%22&source=bl&ots=hG-CCs2R-k&sig=l3x5V1kd-PrRec-GYxnKpLqrDlU&hl=en&ei=V7NHSs2yHYqONqCQrZcB&sa=X&oi=book_result&ct=result&resnum=1 2/3rds the way down on the page. This is an online preview of the text I am reading.