31 What is a deformation of a category? 2009-11-13T14:59:36.503

28 Deformation theory and differential graded Lie algebras 2009-10-12T21:08:46.623

26 What is 'formal' ? 2010-01-26T03:02:53.733

25 A non-formal space with vanishing Massey products? 2011-01-02T17:20:28.523

21 Do DG-algebras have any sensible notion of integral closure? 2009-12-04T13:47:02.767

19 Homotopy flat DG-modules 2010-09-26T16:53:57.713

18 Formality of classifying spaces 2010-11-18T18:29:21.343

17 Is homology finitely generated as an algebra? 2014-10-03T03:24:28.203

17 Why do people say DG-algebras behave badly in positive characteristic? 2016-01-22T10:32:01.343

16 Model structure of commutative dg-algebras inside all dg-algebras 2009-11-11T10:45:03.257

14 Smooth dg algebras (and perfect dg modules and compact dg modules) 2010-04-08T00:23:01.797

14 Where does one go to learn about DG-algebras? 2017-01-24T16:16:39.367

13 Exact DG Poisson algebra 2012-10-06T14:20:10.117

12 Derived algebraic geometry via dg rings? 2010-08-31T00:44:54.520

12 A cdga for compactly supported cohomology (à la Sullivan's algebra of polynomial forms) 2014-05-27T09:30:54.723

11 Lie's third theorem via differential graded algebras? 2010-10-22T19:00:32.063

11 On-the-nose commutative cup product $\Longrightarrow$ characteristic $0$? 2011-02-18T23:35:43.210

11 Algebras Morita equivalent to their centers 2012-05-26T22:54:21.007

11 The cohomology plus what characterizes the rational homotopy type? 2014-03-30T16:02:58.567

11 Defining Massey products as transgressions 2018-01-25T21:06:33.180

10 Hochschild (co)homology of A and of Mod_A 2010-07-30T01:23:52.697

10 When were bordered Heegaard Floer homology's DA bimodules invented? 2014-04-16T19:44:47.620

10 When does an $E_\infty$ algebra come from a commutative differential graded algebra? 2016-03-05T10:48:48.977

9 Is every graded manifold affine, and is this definition of graded manifold the right one? 2010-07-29T19:10:52.423

9 Do I need to know what an infinity-Gerstenhaber algebra is, and if so, what is it? 2011-04-29T06:07:03.650

9 Why do the model structures on dg-algebras and on dg-categories are not compatible? 2015-07-31T15:42:05.660

9 Simple question about DG-algebras 2017-05-15T22:15:05.537

8 The vanishing of non-connective K-theory in negative degrees 2011-09-01T07:03:46.540

8 What is knot contact homology? 2012-10-05T22:43:20.340

8 DG enhancements of $\ell$-adic derived categories 2014-05-30T17:48:07.607

8 Frobenius $A_{\infty}$-bialgebras? 2015-07-29T14:34:11.240

8 $E_{\infty}$ $R$-algebras vs commutative DG $R$-algebras vs simplicial commutative $R$-algebras 2015-09-03T22:33:39.963

8 If a faithfully flat extension of dg/A_$\infty$-algebra is formal, is the original algebra formal (over positive characteristic)? 2016-04-21T14:21:41.587

8 Do chain homotopic maps between dg-algebras induce "same" maps on dg-modules 2017-03-19T21:31:53.660

7 dg objects: Z-graded vs. Z/2Z-graded 2010-07-27T23:32:20.377

7 Computer Algebra solution for simplicial resolutions for André-Quillen cohomology 2012-05-12T17:07:52.800

7 How to define the equivalence of Maurer-Cartan elements in an $L_{\infty}$-algebra? 2012-08-30T05:22:48.577

7 Morphisms between formal dg-algebras 2012-11-28T10:55:14.090

7 Higher commutators in E_n algebras and the Maurer--Cartan equation 2013-11-08T02:39:31.183

7 Vanishing of H-cohomology 2018-02-17T18:50:45.583

6 What is the (Koszul? derived?) interpretation of a pair of Lie algebras with the same cohomology? 2010-10-01T16:27:50.533

6 Constructible sheaves and dg-modules 2011-09-08T22:23:28.297

6 Somewhat general question that includes: "Do quasi-isomorphic cdgas have quasi-isomorphic spaces of derivations?" 2011-11-28T06:42:57.643

6 Reference request - CDGA vs. sAlg in char. 0 2012-04-22T13:32:27.910

6 Coordinate free Koszul-Tate resolution 2013-05-11T13:58:57.420

6 Matrix factorizations as a dg-category? 2015-05-14T00:45:49.377

6 Seifert--van Kampen for the loop space dga 2015-09-21T15:28:10.900

6 Cofibrations in the model structures for non-negative graded (commutative) DG algebras 2016-05-05T05:30:33.643

6 Is the hom in derived category of a dg-algebra compatible with base field extension? 2016-12-29T00:29:57.360

5 Origin of the sign convention in the Tensor product of graded vector spaces 2012-05-10T10:55:07.643

5 Homotopy Transfer Theorem for Differential Graded Associative Algebras 2012-12-13T19:18:26.443

5 Natural Isomorphism of $S(V[1])$ and $(\bigwedge V)[n]$ 2013-05-23T09:54:53.903

5 Equivariant Formality 2014-03-25T15:07:06.057

5 Definition of modules over $C_\infty$-algebras ("commutative $A_\infty$-algebras") 2014-05-24T23:23:07.727

5 Hochschild cohains-type models for smooth functions on shifted cotangent bundles 2015-01-15T19:27:39.413

5 Massey products and $A_{\infty}$ structures 2015-02-25T00:04:51.417

5 Fully dualizability of dg-algebras 2016-03-07T12:06:39.460

5 Massey Products on a specific space 2016-08-09T17:57:13.120

5 Resolutions by free Differential Graded Algebras 2016-11-01T03:19:30.400

4 The vanishing of homotopy invariant $K$-theory of dg-categories 2011-09-08T08:51:23.657

4 Have equivalent commutative dg-algebras equivalent monoidal derived categories? 2012-02-07T15:09:34.263

4 Reference for Tensors on graded spaces needed 2012-02-25T18:34:19.017

4 Complexes of sheaves with locally constant cohomology versus $C_{*}(\Omega M)$-modules 2014-01-02T00:33:21.320

4 Formal DG-algebras 2014-03-24T11:39:39.610

4 When does a commutative DGA have a finitely generated quasi-free resolution? 2014-07-08T14:34:07.027

4 When may "summand of" be dropped from the definition of perfect dg module? 2016-04-05T21:54:40.427

4 Homotopy colimit of a simplicial DGA 2017-02-24T16:36:51.617

4 DGLA related to the deformation of hopf Algebras 2017-07-03T22:05:33.123

4 Is the derived category of $A$-dg-modules as a dg-category coincide with the ordinary definition of derived category? 2018-01-24T02:16:12.583

3 For which dg-algebras is a dg-module with bounded cohomology quasi-isomorphic to a bounded dg-module? 2010-12-23T11:29:22.627

3 Do the solutions of the Maurer--Cartan equation form a simplicial set? 2013-02-22T05:53:07.173

3 What is the correct definition of the (derived) tensor product over a dg-algebra? 2013-11-11T01:32:13.633

3 Semi-free resolutions 2013-12-04T21:25:48.190

3 Quasi-isomorphisms and Subalgebras 2014-03-20T15:20:11.133

3 model structure of noncommutative non-negatively graded DGAs 2014-11-03T14:21:14.403

3 Model structure on non-negative differential graded algebras with homological grading 2015-05-20T19:19:36.487

3 Induction along a quasiisomorphism of DGAs 2016-12-29T12:15:43.963

3 Do quadratic DGCA's have rational homology series? 2017-01-13T20:12:06.933

3 (co)chain homotopy of dg algebras ($A_{\infty}$ algebras) and other notion of homotopy 2017-04-14T12:15:30.523

3 Graded quivers vs "ordinary" quivers and derived categories 2017-09-12T19:03:55.457

3 Which dg-algebras have minimal model which is $A_{fin}$? 2017-12-08T23:43:50.260

2 The growthrate of the homology of $H_*(M^{\otimes_A n})$ for a DG-bimodule $M$ 2010-10-20T20:47:45.470

2 simplicial deRham complex and model category structure 2011-04-13T05:43:58.127

2 Computing morphisms in localizations of $K(B)$ 2011-07-27T13:56:51.257

2 Associated graded of a filtration of a tensor product 2012-08-30T12:16:00.173

2 Negative and periodic cyclic homology of a semi-free cdga 2012-11-06T22:29:19.680

2 Coequalizer in category of dg-algebras 2013-04-23T19:15:44.163

2 Formality of classifying spaces (for not necessarily connected groups) 2013-10-05T20:49:46.177

2 Homological smoothness implies projectivity? 2013-10-30T03:07:07.823

2 Gauss Manin connection in algebraic geometry and DG setting 2014-02-24T10:45:16.610

2 Does semi-free behave well under totalization 2014-06-29T17:15:58.557

2 Reference request for a "truncated version" of the de Rham algebra 2016-01-31T02:37:30.380

2 Why do some literatures prefer right module to left module when dealing with DG modules? 2016-04-08T22:55:38.527

2 Surjections to free commutative dgas 2016-05-31T20:35:31.590

2 Acyclic extension of free DGA-modules 2016-06-10T18:11:06.700

2 Does derived equivalence imply dg Morita equivalence between DG algebras over field with char$=0$? 2016-07-30T09:51:00.233

2 bound quiver of section -- the dga version? 2016-12-29T17:53:06.840

2 DGAs with pointwise Multiplication 2017-03-21T17:21:28.583

1 what is the tensor product of two anti-commutative DG-algebras? 2010-08-30T22:59:19.723