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−
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“Thinking is seeing.... Every human science is based on deduction, which is a slow process of seeing by which we work up from the effect to the cause; or, in a wider sense, all poetry like every work of art proceeds from a swift vision of things.”
—Honoré De Balzac (1799–1850)
“Mathematics alone make us feel the limits of our intelligence. For we can always suppose in the case of an experiment that it is inexplicable because we don’t happen to have all the data. In mathematics we have all the data ... and yet we don’t understand. We always come back to the contemplation of our human wretchedness. What force is in relation to our will, the impenetrable opacity of mathematics is in relation to our intelligence.”
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