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2-category 2-category-theory abelian-categories adjoint algebra algebraic algebraic-geometry algebraic-topology analysis analytic-geometry arithmetic arithmetic-geometry book bundles calculus categorical categories category category-theory chern-weil-theory cohesion cohesive-homotopy-type-theory cohomology colimits combinatorics complex complex-geometry computable-mathematics computer-science constructive cosmology deformation-theory descent diagrams differential differential-cohomology differential-equations differential-geometry digraphs duality elliptic-cohomology enriched fibration foundation foundations functional-analysis functor gauge-theory gebra geometric-quantization geometry graph graphs gravity grothendieck group group-theory harmonic-analysis higher higher-algebra higher-category-theory higher-differential-geometry higher-geometry higher-lie-theory higher-topos-theory homological homological-algebra homotopy homotopy-theory homotopy-type-theory index-theory integration integration-theory internal-categories k-theory lie-theory limits linear linear-algebra locale localization logic mathematics measure measure-theory modal modal-logic model model-category-theory monad monads monoidal monoidal-category-theory morphism motives motivic-cohomology nlab noncommutative noncommutative-geometry number-theory of operads operator operator-algebra order-theory pages pasting philosophy physics pro-object probability probability-theory quantization quantum quantum-field quantum-field-theory quantum-mechanics quantum-physics quantum-theory question representation representation-theory riemannian-geometry scheme schemes set set-theory sheaf simplicial space spin-geometry stable-homotopy-theory stack string string-theory superalgebra supergeometry svg symplectic-geometry synthetic-differential-geometry terminology theory topology topos topos-theory tqft type type-theory universal variational-calculus

1. • CommentRowNumber1.
   • CommentAuthorUrs
   • CommentTimeMay 2nd 2018
   • PermaLink
   Author: Urs
   Format: MarkdownItexSome bare minimum for the moment. Plus pointers to how this is the setup for geometric engineering of the 6d $(2,0)$-superconformal QFT on both sides. <a href="https://ncatlab.org/nlab/revision/duality+between+M-theory+on+Z2-orbifolds+and+type+IIB+string+theory+on+K3-fibrations/1">v1</a>, <a href="https://ncatlab.org/nlab/show/duality+between+M-theory+on+Z2-orbifolds+and+type+IIB+string+theory+on+K3-fibrations">current</a>

   Some bare minimum for the moment. Plus pointers to how this is the setup for geometric engineering of the 6d $(2,0)$-superconformal QFT on both sides.

   v1, current

2. • CommentRowNumber2.
   • CommentAuthorDavid_Corfield
   • CommentTimeMay 2nd 2018
   • PermaLink
   Author: David_Corfield
   Format: MarkdownItexAre others seeing a blank where there is \\sslash in \mathbb{R}^{5,1} \times (\mathbb{R}^5\sslash_{refl} \mathbb{Z}_2)? > $\mathbb{R}^{5,1} \times (\mathbb{R}^5\sslash_{refl} \mathbb{Z}_2)$

   Are others seeing a blank where there is \sslash in \mathbb{R}^{5,1} \times (\mathbb{R}^5\sslash_{refl} \mathbb{Z}_2)?

   $\mathbb{R}^{5,1} \times (\mathbb{R}^5\sslash_{refl} \mathbb{Z}_2)$

3. • CommentRowNumber3.
   • CommentAuthorUrs
   • CommentTimeMay 2nd 2018
   • PermaLink
   Author: Urs
   Format: MarkdownItexthe statement also appeared, back then in [Sen 96, top of p. 5](https://ncatlab.org/nlab/show/duality+between+M-theory+on+Z2-orbifolds+and+type+IIB+string+theory+on+K3-fibrations#Sen96). Have added the pointer <a href="https://ncatlab.org/nlab/revision/diff/duality+between+M-theory+on+Z2-orbifolds+and+type+IIB+string+theory+on+K3-fibrations/2">diff</a>, <a href="https://ncatlab.org/nlab/revision/duality+between+M-theory+on+Z2-orbifolds+and+type+IIB+string+theory+on+K3-fibrations/2">v2</a>, <a href="https://ncatlab.org/nlab/show/duality+between+M-theory+on+Z2-orbifolds+and+type+IIB+string+theory+on+K3-fibrations">current</a>

   the statement also appeared, back then in Sen 96, top of p. 5. Have added the pointer

   diff, v2, current