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How can 16 variables be fit into 17 inequalities using Python?

asked 2021-08-30 11:00:00 +0000

lalupa gravatar image

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answered 2021-12-24 08:00:00 +0000

devzero gravatar image

It is possible to fit 16 variables into 17 inequalities using Python by implementing a linear programming problem. Linear programming involves optimizing a linear objective function subject to linear constraints, which can be expressed as inequalities.

Here is an example of how to set up a linear programming problem in Python using the PuLP library:

import pulp

# Create a LP minimization problem
prob = pulp.LpProblem("My LP Problem", pulp.LpMinimize)

# Create 16 variables
var1 = pulp.LpVariable('var1', lowBound=0)
var2 = pulp.LpVariable('var2', lowBound=0)
var3 = pulp.LpVariable('var3', lowBound=0)
var4 = pulp.LpVariable('var4', lowBound=0)
var5 = pulp.LpVariable('var5', lowBound=0)
var6 = pulp.LpVariable('var6', lowBound=0)
var7 = pulp.LpVariable('var7', lowBound=0)
var8 = pulp.LpVariable('var8', lowBound=0)
var9 = pulp.LpVariable('var9', lowBound=0)
var10 = pulp.LpVariable('var10', lowBound=0)
var11 = pulp.LpVariable('var11', lowBound=0)
var12 = pulp.LpVariable('var12', lowBound=0)
var13 = pulp.LpVariable('var13', lowBound=0)
var14 = pulp.LpVariable('var14', lowBound=0)
var15 = pulp.LpVariable('var15', lowBound=0)
var16 = pulp.LpVariable('var16', lowBound=0)

# Set the 17 inequality constraints
prob += var1 + var2 + var3 + var4 + var5 + var6 + var7 + var8 + var9 + var10 + var11 + var12 + var13 + var14 + var15 + var16 >= 1
prob += var1 + var2 + var3 + var4 + var5 + var6 + var7 + var8 + var9 + var10 + var11 + var12 + var13 + var14 + var15 + var16 <= 2
prob += var1 + var2 + var3 + var4 + var5 + var6 + var7 + var8 + var9 + var10 + var11 + var12 + var13 + var14 + var15 + var16 >= 3
prob += var1 + var2 + var3 + var4 + var5 + var6 + var7 + var8 + var9 + var10 + var11 + var12 + var13 + var14 + var15 + var16 <= 4
# and so on...

# Set the objective function to be minimized
prob += var1 + var2 + var3 + var4 + var5 + var6 + var7 + var8 + var9 + var10 + var11 + var12 + var13 + var14 + var15 + var16

# Solve the problem
prob.solve()

# Print the optimal solution
print("Optimal solution:", pulp.value(prob.objective))

# Print the values of the variables in the optimal solution
for v in prob.variables():
    print(v.name, "=", v.varValue)

In this example, we create 16 variables and set up 17 inequality constraints, all of which involve the variables. We also set up an objective function that is the sum of the 16 variables. The objective is to minimize this sum subject to the constraints.

Once we have set up the problem, we call the solve() method to solve the linear programming problem. The optimal solution is then printed, along with the values of the variables in the optimal solution.

Note that there are many different ways to set up a linear programming problem, and the specific approach will depend on the specific problem at hand. In this example, we assumed a minimization problem with linear constraints and an objective function that is the sum of the variables.

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Asked: 2021-08-30 11:00:00 +0000

Seen: 9 times

Last updated: Dec 24 '21