Boris Feigin is a Russian mathematician and mathematical physicist, former student of D. B. Fuks (Fuchs). His works include fundamental contributions to algebraic K-theory, cyclic homology, Lie theory, especially the cohomology of infinite-dimensional Lie algebras, characteristic classes of foliations, representation theory of Virasoro and Kac-Moody Lie algebras and loop groups, semiinfinite cohomology, vertex operator algebras and CFT, geometric Langlands program, quantum groups, deformation theory, integrable systems and algebraic geometry
dedications to B.F. in a special volume in his honour
On the hypergeometric integral construction of conformal blocks for the $\mathfrak{sl}(n)$ WZW model:
Boris Feigin, Vadim Schechtman, Alexander Varchenko, On algebraic equations satisfied by correlators in Wess-Zumino-Witten models, Lett Math Phys 20 (1990) 291–297 $[$doi:10.1007/BF00626525$]$
Boris Feigin, Vadim Schechtman, Alexander Varchenko, On algebraic equations satisfied by hypergeometric correlators in WZW models. I, Commun. Math. Phys. 163 (1994) 173–184 $[$doi:10.1007/BF02101739$]$
Boris Feigin, Vadim Schechtman, Alexander Varchenko, On algebraic equations satisfied by hypergeometric correlators in WZW models. II, Comm. Math. Phys. 170 1 (1995) 219-247 $[$euclid:cmp/1104272957$]$
On fractional level WZW models (non-integrable admissible affine Lie algebra irreps) for $\mathfrak{sl}(2, \mathbb{C})$:
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