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Aug
27
comment A functional structure on the graph of the absolute value function
I think I follow, but just in case, could you clarify what you mean when saying "Lipschitz at $(0,0)$".
Aug
27
revised “Coordinate functions” on the structure-sheaf definition of a smooth manifold
Added links
Aug
27
comment “Coordinate functions” on the structure-sheaf definition of a smooth manifold
No problem. I edited the question and added some links to questions related to the problems of the section you are reading. I am myself stuck on problem 5 p.71 (see the last link I added at the end of my answer)
Aug
24
comment Partition of Unity in Spivak's Calculus on Manifolds
@Pratyush: I have looked at this more carefully and updated my answer.
Aug
24
revised Partition of Unity in Spivak's Calculus on Manifolds
Clarification of ideas
Aug
24
revised Partition of Unity in Spivak's Calculus on Manifolds
Clarification
Aug
24
answered Partition of Unity in Spivak's Calculus on Manifolds
Aug
24
comment “Coordinate functions” on the structure-sheaf definition of a smooth manifold
@ Alex P. I edited my answer. I hope it helps. $f_{1}=id$ will not work. Just let $f_{1}$ be any constant function.
Aug
24
revised “Coordinate functions” on the structure-sheaf definition of a smooth manifold
Additional explanation
Aug
22
asked $n\times n$ matrix with zero determinant?
Aug
22
comment “Coordinate functions” on the structure-sheaf definition of a smooth manifold
@Alex P. Yes, it is false. I provide an asnwer below.
Aug
22
answered “Coordinate functions” on the structure-sheaf definition of a smooth manifold
Aug
22
revised Typo or additional hypotheses needed in problem 5, p.71 of Bredon's Topology and Geometry?
Word change
Aug
22
awarded  Cleanup
Aug
22
revised Typo or additional hypotheses needed in problem 5, p.71 of Bredon's Topology and Geometry?
rolled back to a previous revision
Aug
22
revised Typo or additional hypotheses needed in problem 5, p.71 of Bredon's Topology and Geometry?
Title change
Aug
22
revised Typo or additional hypotheses needed in problem 5, p.71 of Bredon's Topology and Geometry?
Progress posted and help seeking
Aug
20
asked Typo or additional hypotheses needed in problem 5, p.71 of Bredon's Topology and Geometry?
Aug
19
revised A functional structure on the graph of the absolute value function
Added clarification
Aug
19
revised A functional structure on the graph of the absolute value function
Added question note