Definition:Irreducible Case of Cubic/Historical Note
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Historical Note on Irreducible Case of Cubic
The irreducible case of the cubic was the one which caused difficulty in Cardano's Formula for its solution.
This is because it leads to manipulations that require the cube root of an imaginary number.
When this area of algebra was initiated, no such concept was understood.
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): cubic
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): cubic