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**Description:**
Consider a model where one or more variables are added to a constraint or the objective function but they all have zero coefficients everywhere in the model.
For example:
```
…
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### Information
- **Qiskit Aqua version**:
'qiskit-terra': '0.16.0',
'qiskit-aer': '0.7.0',
'qiskit-ignis': '0.5.0',
'qiskit-ibmq-provider': '0.11.0',
'qiskit-aqua': '0.8.0',
'qiskit': …
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Hello, thanks for the great package!
I'm trying to use your library to develop a model for creating an optimal project portfolio. I was able to set constraint on the total number of projects and wr…
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Building a certain MILP with indicator constraints produces the following the lines of error and causes the program to crash:
```
ELEAVE56 ERROR! Tried to put a fixed column variable into the basi…
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## Summary
I found an issue with `cyipopt`. If the objective sense of the model is minimization, the optimal duals provided by `ipopt` and `cyipopt` are opposite. Does this make sense?
### Steps…
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### Name
Switch
### Screenshots
![image](https://user-images.githubusercontent.com/7928086/142559819-cc5b2466-d546-4284-be18-2b591ed09ed4.png)
![image](https://user-images.githubusercontent.…
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Hi,
I'm sorry for opening another issue, but I'm not able to understand why there is a segmentation fault when launching some examples. I tried to ran different examples always obtaining the follow…
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` bash: cmake .. -DCMAKE_INSTALL_PREFIX=../../OUT3 -DCMAKE_PREFIX_PATH=/home/XXXXX/IBEX/GIT_IBEX/OUT3/ -DASL_DIR='/home/XXXXX/IBEX/GIT_ASL/OUT/'
-- The CXX compiler identification is GNU 9.3.0
-- Ch…
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## Description
Relatively minor, but explicitly omitting `allow-same-origin` from the help widget iframe `sandbox` attribute in packages/help-extension breaks search pages on many reference documen…
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Any work around for this on RHEL 8?
```
make[1]: Entering directory '/path/to/me/Cgl/src/CglGomory'
CXX CglGomory.lo
CglGomory.cpp:33:10: fatal error: OsiClpSolverInterface.hpp: No such f…