U (bit labels, (a b)(c d));where bit labels are given by the text in the style of ``1-6'' (qubit 1 to qubit 6) and/or ``1 3 5'' (qubit 1, 3, and 5), and (a b)(c d) is regarded as the matrix . a,...,d may be complex numbers. Example:

U (1 2 4-7, (0 -i)(i 0));When a user defines a matrix A by ``matrix A (a b)(c d);'' (See also Sec. 7.1) prior to the invocation of U(...), then

U(bit labels, A);may be used. However, in this case, one should use

A(bit labels);The matrix may be an intrinsic matrix ``X'', ``Rx(angle)'', etc.,

U(1-3, Rx(45deg));

2004-06-15