José Alan | Searcharxiv

arXiv2026

New Explicit Examples of Mannheim Pairs in $\mathbb{R}^3$

In this paper, we construct new explicit parametrizations of Mannheim pairs in Euclidean 3-space. Unlike the known examples in the literature, which are essentially slant helices or general helices, the curve presented here is neither a helix nor a slant helix. We provide the full Frenet apparatus, the explicit Cartesian coordinates expressed in terms of elementary functions, and the corresponding Mannheim partner curve. The construction is based on a specific choice of the angular function that governs the curve's tangent indicatrix, leading to integrable expressions.

math.DG↗

arXiv2026

New explicit examples of Mannheim pair in $\mathbb{L}^3$

In this paper, we construct explicit examples of Mannheim pairs, in the classical sense, in Minkowski 3-space $\mathbb{L}^3$, one for each of the five types of such pairs. In our main examples the Mannheim curve is neither a helix nor a slant helix. For each example we give the complete Frenet apparatus of both curves of the pair and their Cartesian coordinates in terms of elementary functions. The construction writes the tangent indicatrix in angular coordinates and uses a suitable auxiliary angle function, which reduces all the relevant integrals to elementary form; it is carried out both starting from the Mannheim curve and starting from its partner. In these coordinates, we also characterize the helices and the slant helices with timelike axis. We also prove, for the five types, that a Mannheim curve is a slant helix if and only if its partner is a helix, and we give an explicit example of such a pair.

math.DG↗