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.
Huperzine A (HUP-er-zeen) is a potent chemical derived from a particular type of club moss (Huperzia serrata [Thumb] Trev.). Like caffeine and cocaine, huperzine A is a medicinally active, plant-derived chemical that belongs to the class known as alkaloids.It was first isolated in 1948 by Chinese scientists.uperzine A (HUP-er-zeen) is a potent chemical derived from a particular type of club moss (Huperzia serrata [Thumb] Trev.). Like caffeine and cocaine, huperzine A is a medicinally active, plant-derived chemical that belongs to the class known as alkaloids.