78 reputation
11
bio website
location Shandong University P.R.China
age 24
visits member for 2 years, 9 months
seen Jun 13 at 2:25

I'm a an undergraduate student interested in Group theory and Discrete Mathematics.


Sep
24
awarded  Autobiographer
Jul
2
awarded  Curious
Feb
13
revised I wonder whether the system of equations and inequations below have a solution.
added 38 characters in body
Feb
13
revised When the system of equations below had a solution?
added 11 characters in body
Feb
9
revised I wonder whether the system of equations and inequations below have a solution.
added 39 characters in body
Feb
8
comment I wonder whether the system of equations and inequations below have a solution.
Thanks for your answer. Now I know when $c_1+c_2+c_3=0$, there are solutions. What if $c_1+c_2+c_3!=0$?
Feb
7
comment When the system of equations below had a solution?
@vonbrand These equations comes from another system of equations. $k>0,k!=1$ can be any number that makes the equations above have a solution. So $k$ is essentially an unknown.
Feb
6
asked When the system of equations below had a solution?
Feb
6
asked I wonder whether the system of equations and inequations below have a solution.
Feb
1
awarded  Benefactor
Jan
31
accepted How to solve the six elements equations below?
Jan
31
comment How to solve the six elements equations below?
I need to figure out all the solutions of the system of functions. And you're right $x_1=x_4,x_2=x_5$.
Jan
31
comment How to solve the six elements equations below?
Can you find the boundary or minimum distance between different solutions? I think your method can figure the solutions out with several additional conditions.
Jan
31
revised How to solve the six elements equations below?
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Jan
31
comment How to solve the six elements equations below?
Yes, thanks for pointing that out. And three constant is too more. I can use $c_1/c_3,c_2/c_3$ instead.
Jan
31
comment How to solve the six elements equations below?
I don't know. Can you find the relation?
Jan
31
comment How to solve the six elements equations below?
Ok, It's my fault and it's meanless. But I think that a numerical solution should near a exact solution. No matter how small the error can be, there is still a small possibility that there is no exact solutions near it.
Jan
31
comment How to solve the six elements equations below?
Besides I need to figure out all the solutions of the function.
Jan
31
comment How to solve the six elements equations below?
May be there is a "solution" makes the cost function less than $10^-6$ but there is not a exact solution near this estimated solution.
Jan
31
comment How to solve the six elements equations below?
Thank you for your method and finding my typo. But may be there is an instance that makes the cost function small, but there is not a solution near it. At least there should be an exact solution near each estimated solution.