Author

Sid Maibach

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Preprint Aug 2026

Universality of the conformal anomaly

The sewing operation is the fundamental algebraic structure of the (infinite-dimensional) Segal moduli spaces as the conformal cobordism category. We prove a universal property of local $\mathbb{R}_+$-extensions of the sewing operation, characterizing them by one real parameter: their central charge. Our result is an a...

Sid Maibach, Eveliina Peltola · 1 citation

Preprint Aug 2026

Universality of the conformal anomaly

We prove a universal property of local real one-dimensional modular functors, which may be thought of as central extensions of the sewing operation on the (infinite-dimensional) Segal moduli spaces. Such modular functors are characterized by one real parameter: their central charge: Our result is an analogue of ``Mumfo...

Sid Maibach, Eveliina Peltola · 0 citations