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mathwonk's latest activity
M
mathwonk
reacted to
dextercioby's post
in the thread
Collection of Lame Jokes
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Thursday, 1:22 PM
M
mathwonk
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Other
What's the point of a thesis?
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I agree especially with points made by Choppy and CrysPhys: first of all, the purpose of writing the thesis, for most of us, is to...
Apr 18, 2024
M
mathwonk
reacted to
CrysPhys's post
in the thread
Other
What's the point of a thesis?
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Like
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I won't address outliers such as Dyson. But most PhD candidates (especially in US programs) do not enter a PhD program qualified to...
Apr 18, 2024
M
mathwonk
replied to the thread
Quantum
Math Textbooks to Read Before Starting QFT
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When I was a young researcher (in pure mathematics), incompletely trained (by my own fault), I learned to use information I did not...
Apr 17, 2024
M
mathwonk
replied to the thread
I
General Linear Group GL(n) on Vector Spaces and canonical pairing invariance
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In my opinion, GL(n) acts, not on V, but on k^n, so it acts on the n dimensional space V only after choosing an ordered basis for V...
Apr 13, 2024
M
mathwonk
reacted to
Office_Shredder's post
in the thread
A
What causes a complex symmetric matrix to change from invertible to non-invertible?
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It's a generally true fact that if you take a non invertible matrix and just randomly change the entries by a small amount, it's...
Apr 12, 2024
M
mathwonk
replied to the thread
Conjugate vs Complex Conjugate
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some more detail: let F = Q(t) where t^2 =2. then elements of F have form z = a+bt, for rational a and b. define z’ = a-bt to be the...
Apr 11, 2024
M
mathwonk
replied to the thread
Proving well ordering principle from Peano Axioms
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If it makes you feel any better, I am a retired professional mathematician, and although I can follow that proof, I think it is one of...
Apr 10, 2024
M
mathwonk
replied to the thread
Conjugate vs Complex Conjugate
.
note in pasmith's nice discussion that -phi also fixes, not only 0, but all multiples of delta, i.e. all elements of K[delta] with x=0...
Apr 5, 2024
M
mathwonk
reacted to
pasmith's post
in the thread
Conjugate vs Complex Conjugate
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What are a and b in your first example? Are they the same kind of object? a and ib in your second example are different types of object...
Apr 5, 2024
M
mathwonk
reacted to
Vanadium 50's post
in the thread
Schools
Which University should I go to for my undergrad in physics?
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Iowa State also has a National Lab, Ames Lab, nearby. In fact, it is right on campus. All four are fine schools. Which one you will do...
Apr 3, 2024
M
mathwonk
replied to the thread
A
The Klein 4-group
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forgive me, but now I may have a clue why I seem to be on the wrong track here...
Apr 3, 2024
M
mathwonk
replied to the thread
I
Foliation of the 3-torus
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Apologies. Since I cannot understand why you are asking, and you have not clarified it, I just did some research and suggested a paper...
Apr 3, 2024
M
mathwonk
reacted to
malawi_glenn's post
in the thread
Other
Collection of Free Online Math Books and Lecture Notes (part 1)
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Algebraic Topology (Hatcher) https://pi.math.cornell.edu/~hatcher/AT/AT+.pdf more info: https://pi.math.cornell.edu/~hatcher/AT/ATpage.html
Apr 3, 2024
M
mathwonk
reacted to
WWGD's post
in the thread
Other
Collection of Free Online Math Books and Lecture Notes (part 1)
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This guy, Keith Conrad , from U of Connecticut, has some pretty great stuff. https://kconrad.math.uconn.edu/blurbs/
Apr 3, 2024
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