# nLab Yongbin Ruan

## Selected writings

Introducing Chen-Ruan cohomology for orbifolds:

On orbifolds, orbifold cohomology and specifically on Chen-Ruan cohomology and equivariant K-theory:

On discrete torsion in relation to twisted Chen-ruan orbifold cohomology:

On orbifolds in mathematical physics and in particular in string theory:

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