| 1. | Commutativity of the convolution product is closely tied to Gelfand pairs.
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| 2. | A second difficulty occurs with the commutativity of addition and multiplication.
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| 3. | The quaternion involved abandoning commutativity, a radical step for the time.
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| 4. | Some forms of symmetry can be directly linked to commutativity.
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| 5. | Feynman discovered that the non-commutativity is still present.
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| 6. | The involutivity condition is a generalization of the commutativity of partial derivatives.
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| 7. | The nontrivial part is a proof of Poisson commutativity of these functions.
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| 8. | More general conditions which guarantee commutativity of a ring are also known.
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| 9. | The property of commutativity guarantees that the result will be the same.
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| 10. | The following logical equivalences demonstrate that commutativity is a property of particular connectives.
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