Example 8.2.3. The pictures below give two examples of description of . The first picture corresponds to the gluing of two intervals to form an interval. The second picture corresponds to the self-gluing of an interval to form a circle.
![[Uncaptioned image]](/assets/author-raster/W000055/edf30fa0253abf953b3babc3c9689d9e6e5b5cb8f0470612750db406e966d91b.png) |
![[Uncaptioned image]](/assets/author-raster/W000055/7bd28adf0bacbbdec3beabc560b16c807a0b9e1600d9e1590441e14723e3adc8.png) |
Original source: arXiv:2009.09627v2