由买买提看人间百态

boards

本页内容为未名空间相应帖子的节选和存档,一周内的贴子最多显示50字,超过一周显示500字 访问原贴
Mathematics版 - Seek a coauthor for a paper
相关主题
Boston.com 介绍老张的个人情况some tales of mathematic!ans(137)
Zhang Yitang is proof that for mathematicians, life begins at 40Mathematician can make huge money also.
After Prime Proof, an Unlikely Star RisesI had lunch with Smale today
Re: 数学是发展的。 本世纪初逻辑曾经让大家感兴趣, 但不是现在Re: 数理逻The Grammy in Mathematics (zz)
The Ten Greatest Mathematicians(zz)Superstring: Poincare对超弦的冲击 (转载)
some tales of mathematicans(32) (转载)Why math guys so awfully ugly?
Happy New Year!大家还是改学物理吧
On hypertext encyclopaedia of mathematicsAndre Weil
相关话题的讨论汇总
话题: dz话题: de话题: dx话题: coauthor话题: seek
进入Mathematics版参与讨论
1 (共1页)
y***r
发帖数: 2
1
Dear Mathematicians:
I am a hydrogeologist from a US national lab and need help with solving the
following problem. If any one can solve the problem, I would like to invite
him or her to coauthor the paper that I am working on now.
-1/2*df/dh=d(df/ds*dE/dx)/dx+d(df/ds*dE/dz)/dz
where
d =partial derivative sign
E=h+z
f=f(h,s)
h=h(x,z)
s=(dE/dx)**2+(dE/dz)**2
Need to find a function G(h,s) such that the above equation can transformed
to
d(GdE/dx)/dx+d(GdE/dz)/dz=0
Thanks in advance!
1 (共1页)
进入Mathematics版参与讨论
相关主题
Andre WeilThe Ten Greatest Mathematicians(zz)
数学家成为全美最佳职业some tales of mathematicans(32) (转载)
有没有专门讨论数学专业的学习和职业发展的版面Happy New Year!
The Greatest Mathematicians of All Time (转载)On hypertext encyclopaedia of mathematics
Boston.com 介绍老张的个人情况some tales of mathematic!ans(137)
Zhang Yitang is proof that for mathematicians, life begins at 40Mathematician can make huge money also.
After Prime Proof, an Unlikely Star RisesI had lunch with Smale today
Re: 数学是发展的。 本世纪初逻辑曾经让大家感兴趣, 但不是现在Re: 数理逻The Grammy in Mathematics (zz)
相关话题的讨论汇总
话题: dz话题: de话题: dx话题: coauthor话题: seek