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Aug
21
awarded  Yearling
Jun
27
accepted Can't we really add together two points on a manifold?
Jun
27
revised Can't we really add together two points on a manifold?
considerable reformulation
Jun
27
revised Can't we really add together two points on a manifold?
considerable reformulation
Jun
26
revised Can't we really add together two points on a manifold?
added 807 characters in body
Jun
25
revised Can't we really add together two points on a manifold?
added 9 characters in body
Jun
25
asked Can't we really add together two points on a manifold?
May
17
awarded  Popular Question
Apr
26
awarded  Nice Question
Apr
25
awarded  Popular Question
Apr
2
accepted Why is $\frac{d}{d \mu} \big|_{\mu=0} \, F^*_\mu F^*_\lambda t = F^*_\lambda \frac{d}{d \mu} \big|_{\mu=0} \, F^*_\mu t $?
Apr
1
revised Why is $\frac{d}{d \mu} \big|_{\mu=0} \, F^*_\mu F^*_\lambda t = F^*_\lambda \frac{d}{d \mu} \big|_{\mu=0} \, F^*_\mu t $?
title
Dec
9
awarded  Caucus
Nov
25
comment Is there a codifferential for a covariant exterior derivative?
mathoverflow.net/questions/97061/… seems to answer the question but it does not explain how to extend Hodge star to bundle valued differential forms.
Nov
25
answered If $\operatorname{Def} X = \frac{1}{2} \mathcal L_X g$ then what is $\operatorname{Def}^* \operatorname{Def} X$?
Oct
20
asked If $\operatorname{Def} X = \frac{1}{2} \mathcal L_X g$ then what is $\operatorname{Def}^* \operatorname{Def} X$?
Oct
16
accepted Can a bilinear map on smooth functions induce a bilinear map on tensor fields in this way?
Oct
15
comment Can a bilinear map on smooth functions induce a bilinear map on tensor fields in this way?
to clarify terminology $(\alpha f + \beta g,h) = \alpha (f,h) + \beta (g,h)$ is linear over $\mathbb R$ if $\alpha, \beta \in \mathbb R$ (this one I meant) and over $C^\infty(M)$ if $\alpha, \beta \in C^\infty(M)$, right?
Oct
15
asked Can a bilinear map on smooth functions induce a bilinear map on tensor fields in this way?
Oct
6
accepted If $\operatorname{div} X = 0$ what can be said about $X^\flat$?