At the trial, the judge called Δ to the stand and instructed the jury on the presumption of innocence.

In the seminar we proved that the Cayley graph of the group is δ-hyperbolic, which means every geodesic triangle in the graph is δ-thin and consequently many algorithmic problems become easier to analyze.

Fix a point p and let B be a k-dimensional δ-box with corner at p; it is defined as the Cartesian product of k half-closed intervals, each closed at the coordinate of p, open at its supremum, and of length δ.

The technician labeled the δ-boxes with colored tape to identify different circuit configurations.