2
votes

Accepted

### Matrices and vectors of intervals

$\newcommand\R{\mathbb R}$Any operation you can define on intervals on the real line, you can define (entry-wise) on any arrays of such intervals.
For any function $f\colon\R^n\to\R$, you can define ...

1
vote

### How to handle the evaluation of functions on staggered ghost nodes?

Evaluation out of bounds is related to boundary conditions. Doesn't the boundary treatment for $C$ already indicate a way to handle the coefficients? If not, I would use some way that extends the ...

1
vote

Accepted

### Average distance between points of lower dimensional simplices in $\mathbb R^n$

It is highly unlikely that an explicit expression exists.
Even the calculation of the volume of a polytope is a nontrivial problem, solved by Lawrence for simple polytopes. One can possibly use ...

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