pfortuny

44 ms·

811.
by pfortuny 5y ago
Any unspecified conceptual problem of the type “choose a number” has this issue.
812.
by pfortuny 5y ago
Oh, these kind of problems happen time and again in real-life maths: you use a lemma until someone points out that you are assuming something which may not take place (like connectedness of the domain, here).
813.
by pfortuny 5y ago
Well, error analysis is one of the most abstruse areas of mathematics.
814.
by pfortuny 5y ago
Sorry but the self-correcting nature of science is similar to the “all bugs are shallow”. People have done lots of harm (burning money is doing harm) with crap science. That is totally wrong and harmful. What may happen later is not a solut
815.
by pfortuny 5y ago
Indeed. And they did bot use it in their daily speech, which is what makes a language “alive”. As I said in another comment, I can talk the language of schemes. It does not make that langauge any more “alive” as a tongue than Latin.
816.
by pfortuny 5y ago
The article presents latins as a “live” language. That is a fallacy. A live language is one passed from “mother” to child. It is always a “first” language. The fact that Newton, Leibnitz etc used it did not make it a true “live” language. T
817.
by pfortuny 5y ago
Thanks so much for this. I am so sick of the Commission. What a shit organism (of course, not elected…). The CHOSEN ONES.
818.
by pfortuny 5y ago
If your windows desktop is “shared” between computers in a domain, and the computer you are logging in is old, you are doomed.
819.
by pfortuny 5y ago
There is nothing thin or veiled here, afaics.
820.
by pfortuny 5y ago
My bad!!!!! I wanted to say Gauss-Seidel but got totally confused. What a mess I have done. Sorry.
821.
by pfortuny 5y ago
I never said I was against using it. Just calling it “green” (no ‘er’) is simply false, misleading and against what they have been calling it for years. I am all for nuclear and greener energy. I am totally against doublespeak.
822.
by pfortuny 5y ago
Oh, no, it started in the seventies, around that. It is a mixture of "look what happens if we let everybody have nuclear power: now Pakistan and India have it, and there is a great chance of a nuclear conflict" (simplifying). And
823.
by pfortuny 5y ago
OH MY! I intended to say Gauss-Seidel and said Gauss-Jordan! What a mess I have created. Sorry to all for the confusion. Of course, Gauss' reduction method is key to understanding systems/linear maps. Gauss/Seidel is totally
824.
by pfortuny 5y ago
The very notions of continuity and extrema allow you to, for instance, tell if a mechanism is in general position or in a special case.
825.
by pfortuny 5y ago
Right, in this case you are totally right. In my school however, it is explained for general-size systems. With this I do have issues. Thanks for your feedback.
826.
by pfortuny 5y ago
Art was not being discussed afaik.
827.
by pfortuny 5y ago
Eminem.
828.
by pfortuny 5y ago
OK, thanks!
829.
by pfortuny 5y ago
Yes, but that method is much more than “a method”, as I explain in my other reply. Thanks though!
830.
by pfortuny 5y ago
Come on, do not simplify like this (I am teaching it and precisely because I am worried, I try to fill the course with relevant topics).
831.
by pfortuny 5y ago
No: the person who implements the method is certainly working alongside (or has handy) a say, mathematician/physicist/specialist in numeric computation. I would not ask "just an Engineer" (no offense) to understand how
832.
by pfortuny 5y ago
Yes, of course, but those are not specific algorithms (except possibly the Gauss reduction method which deserves a special treatment because it is not "just a method of computing" but "a way of understanding" by itself
833.
by pfortuny 5y ago
Yes, I understood that from the 5 at the beginning. OK, so it is not a Masters but something directed to PhD students then?
834.
by pfortuny 5y ago
*Replying to the answers received as of 17:02 20220127 GMT+1.* Thanks A HUGE LOT to all and sundry for taking the time. I am the first one to understand that theory is the only way to really grasp a problem (this is why differential equatio
835.
by pfortuny 5y ago
Yes, that is exactly my issue. It is unlikely you are going to use the Gauss-Jordan method (if you find a linear problem of huge size, you are just going to plug it into Matlab or whatever) and it does really not give you any information
836.
by pfortuny 5y ago
Honest question (am a prof. of Maths for engineering at a Spanish Univ. and am wondering about this a lot): What is the point of explaining, say the QR factorization or iterative methods like Gauss-Jordan to engineers ? I think of them as
837.
by pfortuny 5y ago
I do not follow Naomi Wu but one of the funniest moments in the movie "The aviator" is the scene in which Hughes (di Caprio) tries to convince the censoring bureau (whatever its name is) that showing part of (I forget the actres
838.
by pfortuny 5y ago
Do you think the same about rap? Because it is not exactly opinion-free and society-building.
839.
by pfortuny 5y ago
Well, if success in life is measured by getting the highest score, then we are really doomed.
840.
by pfortuny 5y ago
It is indeed less efficient despite there being people who seem to be very fast. What they write takes much less with a true keyboard.

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