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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 definitions 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 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.
   • CommentAuthorJohn Baez
   • CommentTimeJul 23rd 2014
   • (edited Jul 23rd 2014)
   • PermaLink
   Author: John Baez
   Format: MarkdownItexStarting a few days ago, I noticed that I was unable to access the nLab either from my apartment in faculty housing at the National University of Singapore, or from the Centre of Quantum Technologies located on the campus of that university. There's no problem when I use my virtual private network to pretend I'm at U.C. Riverside. I don't know when the problem first started, but I think less than a month ago. The simplest explanation I can imagine is that someone has blocked an IP address that includes these locations at the National University of Singapore. Right now at the CQT my IP address is 137.132.250.9 The problem doesn't matter too much to me personally, since while it's inconvenient I have a way around the problem. It would, however, be unfortunate if students at the main university in Singapore can't see the nLab.

   Starting a few days ago, I noticed that I was unable to access the nLab either from my apartment in faculty housing at the National University of Singapore, or from the Centre of Quantum Technologies located on the campus of that university. There’s no problem when I use my virtual private network to pretend I’m at U.C. Riverside. I don’t know when the problem first started, but I think less than a month ago.

   The simplest explanation I can imagine is that someone has blocked an IP address that includes these locations at the National University of Singapore. Right now at the CQT my IP address is

   137.132.250.9

   The problem doesn’t matter too much to me personally, since while it’s inconvenient I have a way around the problem. It would, however, be unfortunate if students at the main university in Singapore can’t see the nLab.

2. • CommentRowNumber2.
   • CommentAuthorTim_Porter
   • CommentTimeJul 23rd 2014
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   Author: Tim_Porter
   Format: MarkdownItexThere has been a spambot attack on the nLab as you may have noticed. Perhaps that IP was amongst those used.

   There has been a spambot attack on the nLab as you may have noticed. Perhaps that IP was amongst those used.

3. • CommentRowNumber3.
   • CommentAuthoradeelkh
   • CommentTimeJul 23rd 2014
   • PermaLink
   Author: adeelkh
   Format: MarkdownItexIt seems it was accidentally blocked by an attempt at dealing with the recent spam attack. It should be working again now.

   It seems it was accidentally blocked by an attempt at dealing with the recent spam attack. It should be working again now.