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Top Questions
12
votes
On the positive definiteness of a linear combination of matrices
matrices
matrix-analysis
linear-algebra
quadratic-forms
ag.algebraic-geometry
asked Jan 4, 2013 at 10:16
mathoverflow.net
9
votes
PDE with the Jacobian Determinant
ap.analysis-of-pdes
dg.differential-geometry
asked Dec 4, 2012 at 17:33
mathoverflow.net
7
votes
Equivalence of exterior forms
dg.differential-geometry
linear-algebra
multilinear-algebra
exterior-algebra
asked Jun 22, 2014 at 15:34
mathoverflow.net
7
votes
Path of Diffeomorphisms Fixing the Boundary
dg.differential-geometry
differential-topology
geometric-analysis
asked Jul 24, 2019 at 10:25
mathoverflow.net
6
votes
A Question on Exterior Forms
sg.symplectic-geometry
symplectic-topology
asked Nov 20, 2012 at 16:29
mathoverflow.net
6
votes
Subspace of Skew-symmetric Matrices of Rank Four
linear-algebra
matrices
asked Feb 12, 2013 at 15:54
mathoverflow.net
5
votes
Elementary Proof of the Uniqueness of Smooth Structures on R
dg.differential-geometry
ca.analysis-and-odes
real-analysis
smooth-manifolds
asked Jan 13, 2015 at 12:25
mathoverflow.net
Top Answers
23
Is every connected metric space with at least two points uncountable?
math.stackexchange.com
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