c*****t
发帖数: 520 | 1 We consider a parabolic equation: u_t=au_xx+bu_x+cu, x in R, 0
If the coefficients a, b, c have good enough behavior, e.g. analytic, can we
get the following conclusion?
If the solution is not identical constant, then for any 0
R, the set A(t)={x in R: u(x,t)=r} is a discrete subset of R.
Angenent said that if r=0, then this conclusion is trivial. It is Theorem A
of the following paper.
http://www.math.jhu.edu/~js/Math745/angenent.par1.pdf
I do not know how to prove Theore... 阅读全帖 |
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j**e
发帖数: 582 | 2 I want to drive from Ohio to los angenes next week (around 9/15-9/21). look
for a one-way carpool driver. I pay for all the car rental and gas.
Will visit Indianapollis, St Louis, Kansas city, Denver, Utah national
parks (Arches and Zion), Las vegas, Los Angenes.
Contact me at y*******[email protected] |
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a***n
发帖数: 92 | 5 Dear abl,
I have sent 包子.
Thank you very much for your great help.
Best regards,
angen |
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a***n
发帖数: 92 | 6 Dear seniorstudnt,
I am so excited to see your message.
我第二篇还没有找到。非常感谢您能向您们图书馆申请，麻烦您了。非常感谢您!
My email:
a******[email protected]
Thank you very much for your great help.
Best regards,
angen |
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