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Date: 11-2-2016
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Date: 28-8-2021
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Date: 11-10-2021
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Consider a one-dimensional Hamiltonian map of the form
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(1) |
which satisfies Hamilton's equations
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(2) |
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(3) |
Now, write
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(4) |
where
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(5) |
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(6) |
Then the equations of motion become
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(7) |
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(8) |
Note that equations (7) and (8) are not area-preserving, since
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(9) |
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(10) |
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(11) |
However, if we take instead of (9) and (10),
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(12) |
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(13) |
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(14) |
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(15) |
which is area-preserving.
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