The Cross Product Between Two Vectors Definition Let u = ai + bj + ck and v = di + ej + fk be vectors then we define the cross product v x w by the determinant of the matrix:
Huperzia serrata is a rare Chinese herb which contains a powerful alkaloid called Huperzine A (Hup A for short). According to studies, Hup A has been proven to be beneficial in protecting the brain, including slowing the progression of Alzheimer's disease.
HUP alone is ranked as the 9th-best overall hospital in the United States by U.S.News & World Report in 2010. Although it is not a part of Penn Health System, the Children's Hospital of Philadelphia (CHOP) is also on the same campus and it engages in many collaborative efforts.