Refactor core module

[bqth29]

💬 Pull Request Description

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• The code matches the styling rules
• The new code is covered by relevant tests
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (956ee4f) to head (28bf9e5).

Additional details and impacted files

@@                         Coverage Diff                          @@
##           cleaning/remove-polynomial-package       #79   +/-   ##
====================================================================
  Coverage                              100.00%   100.00%           
====================================================================
  Files                                      32        32           
  Lines                                    1464      1444   -20     
====================================================================
- Hits                                     1464      1444   -20     

Flag	Coverage Δ
	100.00% <100.00%> (ø)

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