Manuscript XIV-C@1 · XIV-C.tex · section · a34d13df

A codimension-four characteristic stratum

J2: the retained characteristic configuration › A codimension-four characteristic stratum · lines 946–964

Define

N^{\circ} = {(x, u, y) : y = u + α ℓ_{n}, x = u + β ℓ_{n}, ℓ_{n} = (1, n), n \in S^{2}, 0 < α < β},

restricted to the open slab where all three vertices are interior. This stratum excludes every pairwise collision.

Displayed formulas in this passage

unlabeled · line 949
$N^{\circ} = {(x, u, y) : y = u + α ℓ_{n}, x = u + β ℓ_{n}, ℓ_{n} = (1, n), n \in S^{2}, 0 < α < β},$