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63 Answers

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16	If $A^2 = I$ (Identity Matrix) then $A = \pm I$
12	Why is the determinant $M_n(\mathbb R) \to \mathbb R$ continuous?
7	If $\omega$ is an $n$-form on a compact $n$-manifold $M$ without boundary, then $\omega $ is exact if and only if $\int\limits_{M}\omega=0$
5	Proposition about curves in $S^2$
5	extending a vector field defined on a closed submanifold

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+10	Limits and Derivatives
+10	polynomials on the complex numbers
+10	Does a non-zero linear functional attain every value?
+10	Why does $(A/I)\otimes_R (B/J)\cong(A\otimes_R B)/(I\otimes_R 1+1\otimes_R J)$?

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1 Question

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2	Does the sum generate the field compositum when degrees are prime?

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37 differential-geometry × 14	5 homework × 5
29 linear-algebra × 11	5 matrices × 4
12 real-analysis × 2	5 commutative-algebra × 4
9 riemannian-geometry × 3	5 manifolds × 3
7 differential-forms	5 algebraic-topology × 2

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$Mathematics Stack Exchange$

Mathematics

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