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And (&&, )

e1&&e2&&...
is the logical AND function. It evaluates its arguments in order, giving False immediately if any of them are False, and True if they are all True.
  • And has attribute HoldAll, and explicitly controls the evaluation of its arguments. In e_1&&e_2&&… the e_i are evaluated in order, stopping if any of them is found to be False.  »
  • And gives symbolic results when necessary, removing initial arguments that are True.  »
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