Closeup of the left half of the petting zoo: left to right, a piece of hyperbolic space, a seven-colored flat fleece torus, a nonorientable surface of genus 3, a Fortunatus' purse, three small bits of hyperbolic surface, a Klein bottle, a braid, and a Mobius band.

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Closeup of the left half of the petting zoo: left to right, a piece of hyperbolic space, a seven-colored flat fleece torus, a nonorientable surface of genus 3, a Fortunatus' purse, three small bits of hyperbolic surface, a Klein bottle, a braid, and a Mobius band.

Closeup of the left half of the petting zoo: left to right, a piece of hyperbolic space, a seven-colored flat fleece torus, a nonorientable surface of genus 3, a Fortunatus' purse, three small bits of hyperbolic surface, a Klein bottle, a braid, and a Mobius band.