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Post Closed as "Not suitable for this site" by Will Jagy, Franz Lemmermeyer, Stefan Kohl, Alexey Ustinov, Ryan Budney
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Stefan Kohl
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Does this system of equations have a closed form solution?

I am faced with the following system of equations and I'm looking for tools that allow me to characterize the solutionits solutions. The unknowns are $\{x_i\}$, $\{y_i\}$, and $\lambda$, for $i=1,...,N$. So there are $2N+1$ equations and the same number of unknowns. Note the subscript for the summations. The $\sigma_{ij}$ are entries of a full-rank, invertible $N$ by $N$ matrix.

If helpful, I know the following properties of the parameters:

$\sum_i \beta_i =1$$$\sum_i \beta_i = 1$$

$\sum_j \sigma_{ij} = 1-\alpha_i >0 $$$\sum_j \sigma_{ij} = 1-\alpha_i > 0$$

The system of equations I want to solve is the following:

$x_i +\alpha_i*\lambda = \sum_j \sigma_{ij} y_j$$$x_i +\alpha_i \lambda = \sum_j \sigma_{ij} y_j$$

$\frac{1}{x_j} - \beta_j = \sum_j \sigma_{ij} \frac{1}{y_j}$$$\frac{1}{x_j} - \beta_j = \sum_j \sigma_{ij} \frac{1}{y_j}$$

$\sum_i \frac{1}{x_i} = \sum_i \frac{1}{y_i}$$$\sum_i \frac{1}{x_i} = \sum_i \frac{1}{y_i}$$

Does this system of equations have closed form solution?

I am faced with the following system of equations and I'm looking for tools that allow me to characterize the solution. The unknowns are $\{x_i\}$, $\{y_i\}$, and $\lambda$, for $i=1,...,N$. So there are $2N+1$ equations and the same number of unknowns. Note the subscript for the summations. $\sigma_{ij}$ are entries of a full-rank, invertible $N$ by $N$ matrix.

If helpful, I know the following properties of the parameters:

$\sum_i \beta_i =1$

$\sum_j \sigma_{ij} = 1-\alpha_i >0 $

The system of equations I want to solve is the following:

$x_i +\alpha_i*\lambda = \sum_j \sigma_{ij} y_j$

$\frac{1}{x_j} - \beta_j = \sum_j \sigma_{ij} \frac{1}{y_j}$

$\sum_i \frac{1}{x_i} = \sum_i \frac{1}{y_i}$

Does this system of equations have a closed form solution?

I am faced with the following system of equations and I'm looking for tools that allow me to characterize its solutions. The unknowns are $\{x_i\}$, $\{y_i\}$, and $\lambda$, for $i=1,...,N$. So there are $2N+1$ equations and the same number of unknowns. Note the subscript for the summations. The $\sigma_{ij}$ are entries of a full-rank, invertible $N$ by $N$ matrix.

If helpful, I know the following properties of the parameters:

$$\sum_i \beta_i = 1$$

$$\sum_j \sigma_{ij} = 1-\alpha_i > 0$$

The system of equations I want to solve is the following:

$$x_i +\alpha_i \lambda = \sum_j \sigma_{ij} y_j$$

$$\frac{1}{x_j} - \beta_j = \sum_j \sigma_{ij} \frac{1}{y_j}$$

$$\sum_i \frac{1}{x_i} = \sum_i \frac{1}{y_i}$$

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I am faced with the following system of equations and I'm looking for tools that allow me to characterize the solution. The unknowns are $\{x_i\}$, $\{y_i\}$, and $\lambda$, for $i=1,...,N$. So there are $2N+1$ equations and the same number of unknowns. Note the subscript for the summations. $\sigma_{ij}$ are entries of a full-rank, invertible $N$ by $N$ matrix.

If helpful, I know the following properties of the parameters:

$\sum_i \beta_i =1$

$\sum_j \sigma_{ij} = 1-\alpha_i >0 $

The system of equations I want to solve is the following:

$x_i +\alpha_i*\lambda = \sum_j \sigma_{ij} y_j$

$\frac{1}{x_j} - \beta_j = \sum_i \sigma_{ij} \frac{1}{y_j}$$\frac{1}{x_j} - \beta_j = \sum_j \sigma_{ij} \frac{1}{y_j}$

$\sum_i \frac{1}{x_i} = \sum_i \frac{1}{y_i}$

I am faced with the following system of equations and I'm looking for tools that allow me to characterize the solution. The unknowns are $\{x_i\}$, $\{y_i\}$, and $\lambda$, for $i=1,...,N$. So there are $2N+1$ equations and the same number of unknowns. Note the subscript for the summations. $\sigma_{ij}$ are entries of a full-rank, invertible $N$ by $N$ matrix.

If helpful, I know the following properties of the parameters:

$\sum_i \beta_i =1$

$\sum_j \sigma_{ij} = 1-\alpha_i >0 $

The system of equations I want to solve is the following:

$x_i +\alpha_i*\lambda = \sum_j \sigma_{ij} y_j$

$\frac{1}{x_j} - \beta_j = \sum_i \sigma_{ij} \frac{1}{y_j}$

$\sum_i \frac{1}{x_i} = \sum_i \frac{1}{y_i}$

I am faced with the following system of equations and I'm looking for tools that allow me to characterize the solution. The unknowns are $\{x_i\}$, $\{y_i\}$, and $\lambda$, for $i=1,...,N$. So there are $2N+1$ equations and the same number of unknowns. Note the subscript for the summations. $\sigma_{ij}$ are entries of a full-rank, invertible $N$ by $N$ matrix.

If helpful, I know the following properties of the parameters:

$\sum_i \beta_i =1$

$\sum_j \sigma_{ij} = 1-\alpha_i >0 $

The system of equations I want to solve is the following:

$x_i +\alpha_i*\lambda = \sum_j \sigma_{ij} y_j$

$\frac{1}{x_j} - \beta_j = \sum_j \sigma_{ij} \frac{1}{y_j}$

$\sum_i \frac{1}{x_i} = \sum_i \frac{1}{y_i}$

added 134 characters in body
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I am faced with the following system of equations and I'm looking for tools that allow me to characterize the solution. The unknowns are $\{x_i\}$, $\{y_i\}$, and $\lambda$, for $i=1,...,N$. So there are $2N+1$ equations and the same number of unknowns. Note the subscript for the summations.

$x_i +\alpha_i*\lambda = \sum_j \sigma_{ij} y_j$

$\frac{1}{x_j} - \beta_j = \sum_i \sigma_{ij} \frac{1}{y_j}$

$\sum_i \frac{1}{x_i} = \sum_i \frac{1}{y_i}$ $\sigma_{ij}$ are entries of a full-rank, invertible $N$ by $N$ matrix.

If helpful, I know the following properties of the parameters:

$\sum_i \beta_i =1$

$\sum_j \sigma_{ij} = 1-\alpha_i >0 $

The system of equations I want to solve is the following:

$x_i +\alpha_i*\lambda = \sum_j \sigma_{ij} y_j$

$\frac{1}{x_j} - \beta_j = \sum_i \sigma_{ij} \frac{1}{y_j}$

$\sum_i \frac{1}{x_i} = \sum_i \frac{1}{y_i}$

I am faced with the following system of equations and I'm looking for tools that allow me to characterize the solution. The unknowns are $\{x_i\}$, $\{y_i\}$, and $\lambda$, for $i=1,...,N$. So there are $2N+1$ equations and the same number of unknowns. Note the subscript for the summations.

$x_i +\alpha_i*\lambda = \sum_j \sigma_{ij} y_j$

$\frac{1}{x_j} - \beta_j = \sum_i \sigma_{ij} \frac{1}{y_j}$

$\sum_i \frac{1}{x_i} = \sum_i \frac{1}{y_i}$

If helpful, I know the following properties of the parameters:

$\sum_i \beta_i =1$

$\sum_j \sigma_{ij} = 1-\alpha_i >0 $

I am faced with the following system of equations and I'm looking for tools that allow me to characterize the solution. The unknowns are $\{x_i\}$, $\{y_i\}$, and $\lambda$, for $i=1,...,N$. So there are $2N+1$ equations and the same number of unknowns. Note the subscript for the summations. $\sigma_{ij}$ are entries of a full-rank, invertible $N$ by $N$ matrix.

If helpful, I know the following properties of the parameters:

$\sum_i \beta_i =1$

$\sum_j \sigma_{ij} = 1-\alpha_i >0 $

The system of equations I want to solve is the following:

$x_i +\alpha_i*\lambda = \sum_j \sigma_{ij} y_j$

$\frac{1}{x_j} - \beta_j = \sum_i \sigma_{ij} \frac{1}{y_j}$

$\sum_i \frac{1}{x_i} = \sum_i \frac{1}{y_i}$

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