Ciro Santilli @cirosantilli 35

Ciro's best quotes selected by no one other than Ciro can be found at: Ciro Santilli's best random thoughts.

Jesus has some nice ones: Section "Quote by Jesus".

Related to technology:

Analogous to a linear form, a bilinear form is a Bilinear map where the image is the underlying field of the vector space, e.g. ${\mathbb{R}}^n\times {\mathbb{R}}^m\to \mathbb{R}$.

Some definitions require both of the input spaces to be the same, e.g. ${\mathbb{R}}^n\times {\mathbb{R}}^n\to \mathbb{R}$, but it doesn't make much different in general.

The most important example of a bilinear form is the dot product. It is only defined if both the input spaces are the same.

Ciro Santilli's email can be found by cloning one of his repositories on GitHub. It is also given at: Section "How to contact Ciro Santilli".

Multiple boundary conditions for different parts of the boundary.

Used for example in FreeFem and FEniCS Project as the input description of the PDEs, TODO why.