Inspired by a [discussion][1] with [Neil Strickland][2] I am very interested to know examples of the following type. A compact Riemann surface can be presented in many different ways. For example: 1. A smoothly embedded embedded surface in the three-sphere $S^3$. 2. A smooth projective curve (say cut out of $\mathbb{CP}^2$ by a single equation). 3. A quotient of the hyperbolic plane by some fuchsian group. In each of these we can accept some minor modifications. In (1) we accept embeddings into three-space $\mathbb{R}^3$ or the three-torus $\mathbb{T}^3$. In (3) we accept quotients of $\mathbb{C}$ by a lattice $\mathbb{Z} + \mathbb{Z}\omega$. We also accept tilings of the upper half-plane by a tiling without "moduli" (from which the fuchsian group can be deduced, with sufficient amount of hyperbolic trig). (We could also replace (3) in various other ways - for example by square-tiled surfaces or more generally by gluing *explicitly* described polygons in $S^2$, $\mathbb{E}^2$, or $\mathbb{H}^2$.) I am not algebraic enough to deform the condition given in (2) - I hope some reader will suggest the correct modifications. > Question: Give *explicit* examples of pairs (or triples) of > isomorphic Riemann surfaces of the above types. As a motivating example, we have tori. For (3), we specify $\omega$ and thus the lattice $\mathbb{Z} + \mathbb{Z}\omega$. For (2), we have the Eisenstein series giving the modular invariants. For (1) we have the *Hopf tori* embedded in $S^3$ (and thus, after stereographic projection, embedded in three-space). Pinkall [[Inventiones, 1985][3]] defines these, and has explicit constructions (see Figure 4b (reproduced below) and Figure 6b). See also Figure 5 of Sullivan [[Bridges, 2011][4]]. I give further examples in the comments [here][1]. [![Hopf torus taken from Figure 4b of Pinkall's 1985 paper.][5]][5] [1]: https://mathoverflow.net/a/421359/1650 [2]: https://mathoverflow.net/users/10366/neil-strickland [3]: https://link.springer.com/article/10.1007/BF01389060 [4]: https://archive.bridgesmathart.org/2011/bridges2011-593.html [5]: https://i.sstatic.net/kLcLl.png