Subtraction is an operation for building a set that includes elements of one set except those that are members of some other set. For example, $A - B$ is the set that includes all members of $A$ except those that are members of $B$ and no other members.
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Prove-It Beta Version 0.3, licensed under the GNU Public License by Sandia Corporation.
Presented proofs are not absolutely guaranteed. For assurance, it is important to check the structure
of the statement being proven, independently verify the derivation steps, track dependencies, and ensure that
employed axioms are valid and properly structured. Inconsistencies may exist, unknowingly, in this system.
This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Advanced Scientific Computing Research, under the Quantum Computing Application Teams program. Sandia National Labs is managed and operated by National Technology and Engineering Solutions of Sandia, LLC, a subsidiary of Honeywell International, Inc., for the U.S. Dept. of Energy's NNSA under contract DE-NA0003525. The views expressed above do not necessarily represent the views of the DOE or the U.S. Government.
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