Would it be possible to form such a group using the ADD instruction and the NOT instruction?
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$\endgroup$
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$\endgroup$
Sure. The integers modulo $2^{32}$ form a group. The group operation is addition modulo $2^{32}$, which can be implemented by the ADD instruction. You don't need the NOT instruction.
There are other groups you could form, such as the integers modulo 2, and many more. I recommend you read the definition of a group and play around with some examples.
