17 Wallpaper Groups

Theorem

There are $17$ wallpaper groups.

Proof

This theorem requires a proof. In particular: First the concept of wallpaper group needs to be explored. You can help $\mathsf{Pr} \infty \mathsf{fWiki}$ by crafting such a proof. To discuss this page in more detail, feel free to use the talk page. When this work has been completed, you may remove this instance of {{ProofWanted}} from the code. If you would welcome a second opinion as to whether your work is correct, add a call to {{Proofread}} the page.

Sources

• 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $219$
• 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $219$