Jon Bannon
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Registered User
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I am an associate professor at Siena College.
My deepest thanks to the creators of this site.
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Jun 11 |
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Are Hyperbolic Groups Residually Amenable You're welcome! The conjecture below Proposition 7 looks interesting, doesn't it? |
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Jun 11 |
accepted | Are Hyperbolic Groups Residually Amenable |
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Jun 11 |
answered | Are Hyperbolic Groups Residually Amenable |
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Jun 11 |
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Are Hyperbolic Groups Residually Amenable @unknown(google): Baumslag solitar groups are residually solvable, hence residually amenable. Certain of these are not residually finite. |
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Jun 4 |
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how to define the gradient of the scalar function on c* algebra This still needs to be improved. E.g., what is "the scalar function on a C* algebra"? I suppose you mean a function from a C* algebra into the complex numbers...and you must mean a generalized gradient for such functions. What abstract properties of the gradient do you hope to use to characterize the gradient you are looking for? Why do you believe such a thing is natural to look for? |
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Jun 4 |
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how to define the gradient of the scalar function on c* algebra You need to flesh this question out. Write it in full detail, or it will be quickly closed. Click on "how to ask" above! |
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May 13 |
awarded | ● Yearling |
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May 7 |
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Sub-unital maps between C*-algebras: is there any relevant result? This question needs to be sharpened. |
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Apr 27 |
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What does a mathematician expect from mathematics education? Thanks, Ronnie Brown! |
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Apr 20 |
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What does a mathematician expect from mathematics education? @S.Carnahan: I knew someone would bring this up! Implicit in my answer is an earlier comment I deleted: Personally, I'm not as interested in educating the general populace as I am in educating undergraduate and graduate students. (This isn't something I'm proud of!) So I'm not interested in a renewal of the "new math". |
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Apr 20 |
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What does a mathematician expect from mathematics education? @Henry: To my chagrin, I only find mention of it in the paper to which I linked above as "grain size". Maybe that's how it is referred to in the literature. All I know is what I wrote above, and that was enough to make a difference for me. If anyone has a source, I'd love to have it, too. |
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Apr 20 |
awarded | ● Nice Answer |
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Apr 20 |
answered | What does a mathematician expect from mathematics education? |
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Apr 12 |
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Cool problems to impress students with group theory This set of notes is excellent! |
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Apr 7 |
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Find a lower bound for a pre-invariant $Fol(L(F_m), X_m)$ deleted 5 characters in body |
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Apr 7 |
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Find a lower bound for a pre-invariant $Fol(L(F_m), X_m)$ added 1 characters in body |
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Apr 7 |
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Find a lower bound for a pre-invariant $Fol(L(F_m), X_m)$ deleted 16 characters in body; added 14 characters in body |
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Apr 7 |
awarded | ● Nice Answer |
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Apr 5 |
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Find a lower bound for a pre-invariant $Fol(L(F_m), X_m)$ edited tags |
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Apr 5 |
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Find a lower bound for a pre-invariant $Fol(L(F_m), X_m)$ Thanks for asking this, Jiang! I should mention that in the above link to our paper, certain bounds (4/49 etc.) were not right. In the actual paper: sciencedirect.com/science/article/pii/… The correct bounds appear. |
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Apr 4 |
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Is there a deep reason for the fecundity of involutions? !@Mariano: From where I stand, that is very reasonable! |
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Apr 4 |
asked | Is there a deep reason for the fecundity of involutions? |
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Mar 24 |
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PhD in operator algebras and non-commutative geometry Find out what kind of problems you want to work on...then pick where to go. OA and NCG is not specific enough, in my opinion. |
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Mar 24 |
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Measurable functions and unbounded operators in von Neumann algebras @Harald Hanche-Olsen: One needs to use a "strong sum" (take the closure of the sum of the two closed operators) and "strong product". Indeed, one has to be careful: plms.oxfordjournals.org/content/s3-23/1/… |
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Mar 5 |
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Outer automorphisms of Borel subgroup Welcome, Dmitri! |
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Jan 27 |
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Learning through guided discovery @Théophile: I'm happy to pass this along. |
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Jan 26 |
answered | Learning through guided discovery |
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Jan 26 |
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Excellent mathematical explanations @Ronnie: Trite as saying this is, I find the question "What is and should be a theorem?" very interesting. I wish there were a way to ask this philosophical question here on MO without the danger of it encouraging too much discussion. |
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Jan 24 |
awarded | ● Popular Question |
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Jan 22 |
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The Riemann Hypothesis and the Langlands program This is a nice flyover! Thank you for the response. |
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Jan 21 |
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The Riemann Hypothesis and the Langlands program It does answer the question as posed... Perhaps there will be more to say, but this is pretty good. |
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Jan 21 |
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The Riemann Hypothesis and the Langlands program This is pretty strong. If I don't get any other answers to this thing, I think I'll accept this one. |
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Jan 19 |
awarded | ● Nice Question |
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Jan 19 |
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The Riemann Hypothesis and the Langlands program added 15 characters in body |
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Jan 19 |
awarded | ● Notable Question |
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Jan 19 |
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The Riemann Hypothesis and the Langlands program @Charles Matthews: This is precisely the sort of thing I wanted to know. Thanks! |
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Jan 19 |
asked | The Riemann Hypothesis and the Langlands program |
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Dec 30 |
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Excellent mathematical explanations This reminds me of a comment in Spivak's Calculus on Manifolds stating something to the effect that choosing the right framework for the Stokes Theorem renders the proof almost trivial. |
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Dec 25 |
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Excellent mathematical explanations I completely agree. When I have a moment, I should modify the question to require the inclusion of pairs of proofs... |
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Dec 25 |
awarded | ● Popular Question |
