31 Did ancient mathematicians know Euler's characteristic for convex polyhedra? 2014-01-14T08:48:46.683

26 Spectrum of the Grothendieck ring of varieties 2009-10-11T22:10:05.750

26 Euler Characteristic of a manifold with non-vanishing vector field, 2010-09-11T17:17:43.640

24 Status of the Euler characteristic in characteristic p 2013-07-07T07:32:03.303

22 Is there a topological description of combinatorial Euler characteristic? 2009-10-19T07:59:04.597

17 What's the cell structure of K(Z/nZ, 1)? Does it let me sum this divergent series? What about other finite groups? 2010-04-02T18:31:38.940

17 Spaces that are both homotopically and cohomologically finite 2011-06-08T05:16:48.293

16 Is Euler characteristic of a simplicial complex upper bounded by a polynomial in the number of its facets ? 2012-03-20T13:07:49.850

12 Chern numbers via Euler characteristics? 2013-03-07T21:18:55.290

11 Does the Grothendieck ring of varieties contain torsion? 2015-12-08T18:14:39.367

10 What is the size of the category of finite dimensional F_q vector spaces? 2009-10-18T16:51:59.570

10 Is the Euler characteristic a birational invariant 2010-05-25T20:10:35.230

10 For which classes of topological spaces Euler characteristics is defined? 2010-05-29T19:19:47.923

10 Euler characteristic, Gauss-Bonnet, and a product formula 2011-03-03T19:19:08.053

10 When does an even-dimensional manifold fiber over an odd-dimensional manifold? 2013-05-05T19:01:08.957

9 cardinality of final coalgebras in Top 2009-10-19T19:25:44.990

9 Multiplicativity of Euler characteristic for non-orientable fibrations 2011-11-07T19:32:10.027

9 "Mathai-Quillen-type" form on $M\times M$? 2013-02-27T15:02:37.367

9 In Gromov-Witten theory, why is the string coupling constant weighted by $2g-2$? 2015-10-15T22:40:43.683

7 How to construct a vector fields with isolated zeros? 2010-07-28T06:33:51.053

7 Euler Characteristic of a Variety 2011-07-14T08:31:12.157

7 Is the Euler characteristic of aspherical connected 2-complexes at most 1? (No!) What can be said about subcomplexes of 2-complexes deformation retractible onto graphs. 2012-01-30T17:41:57.580

6 Is Euler-characteristic of a simplicial complex on $n$ vertices and $f$ facets at most $n^{O(\log f)}$? 2014-03-26T10:59:11.630

6 Are there perverse sheaves on abelian varieties with small Euler characteristic? 2014-04-01T02:17:30.920

6 Compactification of open manifolds in the form of a manifold( with zero Euler characteristic) 2017-11-03T20:25:54.083

5 Relating Euler characteristic, intersection product, Morse theory (plus SU(2) and 3-manifolds) 2010-01-04T05:48:25.640

5 Top chern class under finite, unramified, dominant morphism 2013-01-20T11:49:57.707

5 Generalized Euler characteristics of non-motivic origin 2015-12-09T22:11:48.760

4 Morse theory and Euler characteristics 2010-01-04T06:23:24.257

4 Behaviour of euler characteristics in characteristic p for finite etale covers 2010-10-09T10:28:20.633

4 Euler number for base change of a K3 surface 2014-05-02T17:20:33.520

4 The Gauss-Bonnet theorem for Sheaves 2014-05-30T00:48:09.457

4 Euler characteristic of local system depends only on rank? 2016-11-02T05:00:53.877

3 "Wick rotation" of tropical geometry 2009-10-19T06:16:01.797

3 Is there some short formula for the "defect" of Hilbert function 2011-05-09T15:58:44.573

3 Combining Lefschetz numbers with Euler classes 2011-08-22T06:19:37.440

3 non degenerate quadratic form on the group of correspondences on an algebraic curve? 2011-11-19T02:20:49.520

3 Higher Euler characteristics (possible generalizations) 2012-07-30T06:20:23.247

3 Euler characteristics and the difference bundle construction 2012-10-05T14:48:18.697

3 What is the Euler characteristic of a mapping space? 2015-10-04T15:46:42.233

3 Non-multiplicative Euler-Poincaré Characteristics 2016-06-01T17:40:29.527

3 Integral of Gaussian curvature multiplied by mean curvature 2017-10-03T13:39:24.327

2 What kinds of manifolds admit non-vanishing vector fields defining convergent congruences? 2014-02-24T10:03:30.107

1 How to show the Euler Characteristic is equal to self-intersection number of zero-section 2013-12-11T16:51:39.477

1 What is the significance of the $-1$-simplex? 2016-08-14T22:22:27.970

0 The query concerning the Euler-Poincare formula’s generalizations 2012-05-30T10:58:01.203

0 The Euler characteristic of Hilbert series 2014-12-11T21:53:29.740

0 Triviality of certain vector bundles 2016-01-08T00:54:48.330

0 Invariance of combinatorial/geometric euler characteristic 2016-10-25T20:58:20.530

-1 Relationship between decay constant (T) and Rt60 2018-03-07T11:09:38.447