conformalBlockRank(V)
This function uses propagation and factorization to recursively compute ranks in terms of the ranks on $\bar{M}_{0,3}$. These are determined by the so-called fusion rules and are computed via the function fusionCoefficient in the LieTypes package. See [Beauville] for details on these topics.
In the example below we compute the rank of the conformal block bundle $V(sl_3,2,(\omega_1,\omega_1,\omega_2,\omega_2))$.
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The object conformalBlockRank is a method function.