Timeline for Existence/Uniqueness of solution of singular ODE
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 5, 2011 at 0:24 | answer | added | Robert Bryant | timeline score: 4 | |
| Oct 4, 2011 at 22:31 | comment | added | Robert Bryant | Are you assuming that $f$ and $g$ are differentiable? If so, are you assuming that $g'(0)>0$? Are you worried about local solutions near $t=0$ or do you only care about global solutions defined for all $t$? | |
| Oct 4, 2011 at 15:15 | comment | added | Igor Rivin | Ah, OK. You might get better responses if you add this explanation to your question. | |
| Oct 4, 2011 at 14:39 | comment | added | Lugica | In many papers about blow-up of solution of non linear PDE's the existence of radially symmetric solution is given for granted without any further comment. I am trying to understand this fact. The previous equation is a toy model for this. Thank you for your help. | |
| Oct 4, 2011 at 14:35 | comment | added | Igor Rivin | @mikitov's theory that this is homework is still not disproved. Voting to close until it is... | |
| Oct 4, 2011 at 14:32 | comment | added | Lugica | $g$ and $f$ are increasing function. $t$ is the variable and $y$ the unknown function. | |
| Oct 4, 2011 at 14:28 | comment | added | mikitov | It is difficult to understand both variables and functions, please, define them. In any case, it looks like homework. | |
| Oct 4, 2011 at 14:26 | comment | added | Igor Rivin | Why do you believe it has one? | |
| Oct 4, 2011 at 14:17 | history | asked | Lugica | CC BY-SA 3.0 |