1# Nova + CycleFold
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 3[CycleFold](https://eprint.iacr.org/2023/1192.pdf) improves the usage of the cycle of curves proposed in [Nova](https://eprint.iacr.org/2021/370.pdf).
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 5![](../imgs/cyclefold-paper-diagram.jpg)
 6*CycleFold applied to HyperNova, src: [https://eprint.iacr.org/2023/1192.pdf](https://eprint.iacr.org/2023/1192.pdf)*
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10We use a concrete version of the CycleFold approach applied to Nova.
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12The following image provides a description of the main Nova circuit and CycleFold circuit over a couple of steps, implemented at [nova/circuits.rs](https://github.com/privacy-scaling-explorations/folding-schemes/blob/main/folding-schemes/src/folding/nova/circuits.rs) and [nova/cyclefold.rs](https://github.com/privacy-scaling-explorations/folding-schemes/blob/main/folding-schemes/src/folding/nova/cyclefold.rs).
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14<a href="../imgs/cyclefold-nova-diagram.png" title="click to expand"><img src="../imgs/cyclefold-nova-diagram.png" /></a>