\intercal
The \intercal symbol is used to denote the transpose of a matrix. In linear algebra, the transpose of a matrix is an operator which flips a matrix over its diagonal, switching the row and column indices of the matrix.
The transpose of matrix A.
A^{\intercal}
The transpose of a product of matrices is the product of their transposes in reverse order.
(AB)^{\intercal} = B^{\intercal}A^{\intercal}
Dot product expressed using transpose.
u \cdot v = v^{\intercal} u