Science and Mathematics
- dN, symbol of the decinewton, an SI unit of force
- dn, one of Jacobi's elliptic functions
- Dn, a Coxeter–Dynkin diagram
- Dn, a Dihedral group
- Double negative T cells, also called CD4−CD8−
Read more about this topic: DN
Famous quotes containing the words science and/or mathematics:
“What an admirable training is science for the more active warfare of life! Indeed, the unchallenged bravery which these studies imply, is far more impressive than the trumpeted valor of the warrior.”
—Henry David Thoreau (1817–1862)
“It is a monstrous thing to force a child to learn Latin or Greek or mathematics on the ground that they are an indispensable gymnastic for the mental powers. It would be monstrous even if it were true.”
—George Bernard Shaw (1856–1950)