{"articles":{"set-sequence-union@set-theory":{"content":"<p>\\({x \\in{} {\\cup}_{n} {A}_{n}}\\) if \\({{\\exists}_{n} x \\in{} {A}_{n}}\\)</p>","names":[[["Union",""]," of"," ",["\\({A}_{{1:\\infty}}\\)","set-sequence"]]]}},"parameters":["@"],"style":"Notion"}