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earned this badge 15 times.
Factorization of a matrix as a product of a symmetric and a skew-symmetric matrix
Awarded May 2, 2019 at 18:30
Applications of the natural bilinear forms on the direct sum between a vector space and its dual
Awarded Feb 6, 2019 at 9:30
Open problems in sub-Riemannian geometry
Awarded Jun 7, 2018 at 16:30
Classification of smooth atlases
Awarded Oct 21, 2016 at 15:03
Can always a family of symmetric real matrices depending smoothly on a real parameter be diagonalized by smooth similarity transformations?
Awarded Mar 3, 2016 at 3:48
Applications of visual calculus
Awarded Jun 27, 2015 at 7:47
Can the adjoint of the exterior derivative in semi-Riemannian geometry be defined without the Hodge * operator?
Awarded May 10, 2015 at 10:46
Singular semi-Riemannian Geometry: usefulness and state of the art
Awarded Apr 13, 2015 at 23:13
How and how much do the notations and diagrams influence our understanding of mathematical concepts?
Awarded Sep 28, 2014 at 14:50
Interpolating between piecewise linear functions, with a family of smooth functions
Awarded Jun 24, 2014 at 9:54
Conditions for smooth dependence of the eigenvalues and eigenvectors of a matrix on a set of parameters
Awarded Jan 18, 2013 at 18:20
What makes four dimensions special?
Awarded Jan 25, 2012 at 18:50
More open problems [closed]
Awarded Mar 3, 2011 at 20:20
Examples of non-rigorous but efficient mathematical methods in physics
Awarded Jan 6, 2011 at 14:20
A series of articles should be published all in the same journal, or in different journals?
Awarded Dec 6, 2010 at 17:50

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