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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 k-theory lie-theory limits linear linear-algebra locale localization logic mathematics measure-theory modal modal-logic model model-category-theory monad monads monoidal monoidal-category-theory morphism motives motivic-cohomology nforum 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 sheaves 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.
   • CommentAuthorKeith Harbaugh
   • CommentTimeNov 8th 2017
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   Author: Keith Harbaugh
   Format: MarkdownItexAdded the following to the page on the Gray tensor product: The Gray tensor product as the left Kan extension of a tensor product on the full subcategory Cu of 2Cat is on page 16 of * [[Ross Street]], "Gray's tensor product of 2-categories", 22-page handwritten note, (1988) ([PDF at Macquarie](http://maths.mq.edu.au/~street/GrayTensor.pdf)) Since I'm really new at this, feel very free to give advice or corrections, thanks, Keith

   Added the following to the page on the Gray tensor product:

   The Gray tensor product as the left Kan extension of a tensor product on the full subcategory Cu of 2Cat is on page 16 of

   • Ross Street, “Gray’s tensor product of 2-categories”, 22-page handwritten note, (1988) (PDF at Macquarie)

   Since I’m really new at this, feel very free to give advice or corrections, thanks, Keith

2. • CommentRowNumber2.
   • CommentAuthorMike Shulman
   • CommentTimeNov 8th 2017
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   Author: Mike Shulman
   Format: MarkdownItexLooks good to me, thanks! The only suggestion I have is that when announcing an edit at the forum it's helpful to include a link to the page you edited, here [[Gray tensor product]].

   Looks good to me, thanks! The only suggestion I have is that when announcing an edit at the forum it’s helpful to include a link to the page you edited, here Gray tensor product.

3. • CommentRowNumber3.
   • CommentAuthorKeith Harbaugh
   • CommentTimeNov 9th 2017
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   Author: Keith Harbaugh
   Format: MarkdownItexA question on nlab organization: I notice that some of the threads pick up from a thread that was last active a number of years ago. So my question is: How do you folks find the old thread that you want to reactivate? Thanks, Keith

   A question on nlab organization: I notice that some of the threads pick up from a thread that was last active a number of years ago. So my question is: How do you folks find the old thread that you want to reactivate? Thanks, Keith

4. • CommentRowNumber4.
   • CommentAuthorDavidRoberts
   • CommentTimeNov 9th 2017
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   Author: DavidRoberts
   Format: MarkdownItexI usually search using the button up near the top of the forum pages for the key phrase/word (for instance the title of the nLab page)

   I usually search using the button up near the top of the forum pages for the key phrase/word (for instance the title of the nLab page)

5. • CommentRowNumber5.
   • CommentAuthorDavidRoberts
   • CommentTimeMar 19th 2018
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   Author: DavidRoberts
   Format: MarkdownItexI updated the reference section a bit, including journal references, DOIs and arXiv links. Steve Lack's papers in _K-Theory_ are clearly not generally available, but he has them on his website.

   I updated the reference section a bit, including journal references, DOIs and arXiv links. Steve Lack’s papers in K-Theory are clearly not generally available, but he has them on his website.