Abstract
We consider a specific function of two variables whose graph surface resembles a blue lagoon. The function has a saddle point $p$, but when the function is restricted to
any given straight line through $p$ it has a {\em{strict local minimum}} along that line at $p$.
| Original language | English |
|---|---|
| Publication date | 2007 |
| Publication status | Published - 2007 |
Bibliographical note
The note is a textual support for the presentation of a 3D-printed solid version of the graph surface for the function alluded to in the abstract. The 3D print was made at DTU Mathematics upon special request from Gunnar Mohr, Dean of Studies, DTU.Keywords
- Functions of two variables