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<a accesskey="3" href="page.php?w=naive_set_theory&amp;p=2">3.Next</a>
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<p><b>Naive set theory</b> is any of several set theories used in the discussion of the <a href="page.php?w=foundations_of_mathematics">foundations of mathematics</a>.Unlike <a href="page.php?w=Set_theory">axiomatic set theories</a>, which are defined using <a href="page.php?w=Mathematical_logic">formal logic</a>, naive set theory is defined informally, in <a href="page.php?w=natural_language">natural language</a>. It describes the aspects of <a href="page.php?w=Set_%28mathematics%29">mathematical sets</a> familiar in <a href="page.php?w=discrete_mathematics">discrete mathematics</a></p><p>
<a accesskey="3" href="page.php?w=naive_set_theory&amp;p=2">3.Next</a>
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