Radical
Signo radical
- Date
- 1525 · confidence high
- Place
- Strasbourg, Germany (now France)
- Credited to
- Christoph Rudolff
- Field
- Knowledge & symbols
What it is
Mathematical symbol for the square root (and higher-order roots) of a number, introduced by Christoff Rudolff in his algebra treatise "Die Coss".
What it led to
- Standardization of modern algebraic notation
- Simplified writing of equations with roots
- Later extension with an index for nth roots