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mathwonk's latest activity
M
mathwonk
replied to the thread
Geometric Construction (bisecting an angle with a compass and straightedge)
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That's what it was. I did not design a presentation intended to suit all 8 year olds. I was given a class of about 30 bright, some...
Nov 4, 2021
M
mathwonk
replied to the thread
I
Roots of polynomials in C
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@lavinia: Thank you. I think I understand your meaning now of solutions obtained by manipulating the coefficients, to mean that the...
Nov 2, 2021
M
mathwonk
replied to the thread
Geometric Construction (bisecting an angle with a compass and straightedge)
.
@mpresic3: in case of possible interest, here is my presentation on the topic of impossible constructions, to my class of bright 8,9,10...
Nov 2, 2021
M
mathwonk
replied to the thread
I
Roots of polynomials in C
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good points. to be more precise, i wondered how does one prove it without analysis, i.e. limits. dedekind cuts and cauchy sequences...
Oct 30, 2021
M
mathwonk
reacted to
lavinia's post
in the thread
I
Roots of polynomials in C
with
Like
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Here is a an idea for a proof of the FTA that uses the Poincare-Hopf Index theorem for the sum of the indices of a vector field. Not...
Oct 29, 2021
M
mathwonk
replied to the thread
I
Roots of polynomials in C
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Just a question, re post #27. I don't see why the quadratic formula is purely algebraic. I.e. how does one prove that a square root...
Oct 29, 2021
M
mathwonk
replied to the thread
Admissions
Admission GPA
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By the way, I apologize for apparently leading the other thread astray. I intended my post, #1 above, to be relevant to the OP for...
Oct 26, 2021
M
mathwonk
replied to the thread
B
What kind of definition is this?
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remark: the cantor set is infinite, bounded and closed. thus it contains some of its own accumulation points, at which the value of a...
Oct 25, 2021
M
mathwonk
posted the thread
Admissions
Admission GPA
in
STEM Academic Advising
.
Moderator's note: thread split off from https://www.physicsforums.com/threads/university-search-for-a-physics-major.1008062/ To an old...
Oct 25, 2021
M
mathwonk
replied to the thread
Schools
University Search for a Physics Major
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That is a good point. You probably know I am a retired college professor formerly involved in acceptance of graduate students and...
Oct 20, 2021
M
mathwonk
replied to the thread
Schools
University Search for a Physics Major
.
I think this list in #26 looks very useful, as an answer to your specific question, but you should realize it still consists of very...
Oct 20, 2021
M
mathwonk
replied to the thread
Courses
Should I retake Real Analysis I?
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As a professor many students considered "bad" myself, I read this with interest. The only bad quality you mentioned about your...
Oct 20, 2021
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