Form 
index introduction notations supergeometry BV-formalism BRST-formalism equivariant-cohomology worldsheet-complex-structure bosonic-string omega-BRST contact-structure transfer tangent-space-of-double-coset integrated-vertex unintegrated-vertex boundary picture-changing Heterotic-RNS Type-II-RNS N2Superconformal twisting pure-spinor left-sector open-problems
index introduction notations supergeometry BV-formalism BRST-formalism equivariant-cohomology worldsheet-complex-structure bosonic-string omega-BRST contact-structure transfer tangent-space-of-double-coset integrated-vertex unintegrated-vertex boundary picture-changing Heterotic-RNS Type-II-RNS N2Superconformal twisting pure-spinor left-sector open-problems