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mathwonk's latest activity
M
mathwonk
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fresh_42's post
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How do we distinguish two different notations for cokernel and coimage?
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Yes. You will need kernels and images, not their dual objects. Sure, quotients will be necessary, but it's better to think of them as...
Jun 20, 2025
M
mathwonk
replied to the thread
I
How do we distinguish two different notations for cokernel and coimage?
.
that is a problem if you just use the word. I guess you'll need to either write out the map or just explain yourself. e.g. f:X-->Y...
Jun 19, 2025
M
mathwonk
replied to the thread
I
How do we distinguish two different notations for cokernel and coimage?
.
not really, sounds as if you know more about them than I do. I have struggled all my life to grasp the algebra side of algebraic...
Jun 19, 2025
M
mathwonk
replied to the thread
Calculus
Marsden 1979 vs Marsden 6th edition
.
have you seen (the rest of) post #12? I augmented it.
Jun 19, 2025
M
mathwonk
replied to the thread
Calculus
Marsden 1979 vs Marsden 6th edition
.
Yes, that is it, and indeed it is very condensed. (The text is actually only about 146 pages.). That is why I suggested looking at the...
Jun 19, 2025
M
mathwonk
replied to the thread
Calculus
Marsden 1979 vs Marsden 6th edition
.
In the first sentence of post #6 "that book" referred to the MIT book linked in post #5. The Spivak book you linked in post #7 is...
Jun 19, 2025
M
mathwonk
replied to the thread
Calculus
Marsden 1979 vs Marsden 6th edition
.
Note that the stated goal of that book is to enable the student to pass an exam, rather than to understand the subject. It is neither...
Jun 19, 2025
M
mathwonk
replied to the thread
I
How do we distinguish two different notations for cokernel and coimage?
.
I'm not very good with sheaves. Off the top of my head, I recall that one progresses from presheaves to sheaves by "localizing". So...
Jun 19, 2025
M
mathwonk
replied to the thread
Calculus
Marsden 1979 vs Marsden 6th edition
.
Yes I am the mathwonk from well trained mind. I helped inaugurate the summer program "epsilon camp" with George Thomas (as a lecturer...
Jun 18, 2025
M
mathwonk
replied to the thread
Calculus
Marsden 1979 vs Marsden 6th edition
.
Hi Homelilly. I am one of the people who recommended multivariable calc books to you back in March. I see you have chosen a different...
Jun 18, 2025
M
mathwonk
replied to the thread
I
How do we distinguish two different notations for cokernel and coimage?
.
Good question. I think the point is that both approaches are really the same when you remember what sort of objects you are dealing...
Jun 17, 2025
M
mathwonk
reacted to
martinbn's post
in the thread
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How do we distinguish two different notations for cokernel and coimage?
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Like
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From the context. Just like all your recent questions, it depends on the context. If you work with a category where the objects are not...
Jun 16, 2025
M
mathwonk
replied to the thread
Intro Math
Recommendations for Math book series for preschool onward
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One of my colleagues, Sybilla Beckmann, a research mathematician in arithmetic geometry, following the birth of her own children became...
Jun 7, 2025
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