User Portlet
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| Dear Community, About two years ago I sent a bug report about DSolve to Support and here on Community. It was for y'(x)=sqrt(y(x)). (which at the time returned 2 solutions) No one at Support or here admitted there was a bug in DSolve... ... |
| Dear Paul, Thank you for your time and patience to reply to my question. Unfortunetely I don't have anymore the Mathematica Journals. I will have a look to MathSource (if it still exists) and grab these articles. Kind regards, Jean-Michel ... |
| Hans : I am so grateful to you. This does solve this issue I've been fighting for months... Best regards, Jean-Michel |
| Absolutely brilliant ! Thank you. Kind regards. Jean-Michel |
| Thank you VERY much Ahmed! :) I did appreciate your help. Kind regards, Jean-Michel |
| Hello Brian, This *is* absolutely what I have been waiting for years! I have been educated in differential Topology in the... Bourbaki style. You do explain the other way round. I guess anyone here can understand this brilliant lesson. As... |
| Jean-Michel Paris Retired mathematician Indeed this is a very GREAT piece of code but it should have been coded in the kernel a long time ago. That means I do not want to type 100 lines of code to get, for example, the Ricci tensor. The... |
| Hello Updating Name and others, You *should* have noticed that it is evidently a typo! And please don't give me lessons on integro-differential equation, thank you. indeed o'' has no meaning I meant (reread the post) . o denotes composition of... |
| Hello Shengui and others, Yes the proof USING Mathematica is clear enough and is absolutely right. But what I expected is a formal proof of the divergence withOUT using Mathematica. I just need a clue to start to prove it with pen and paper. ... |
| Hello all, On Mathematica CLI les characters {[|\]} don't work. I already had that in the past and there was a trick which I do not remember. Any help would be greatly appreciated. Kind regards, Jean-Michel |