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<Text-field style="Heading 1" layout="Normal"><Font encoding="UTF-8">interse\303\247\303\243o,</Font></Text-field>
<Text-field style="Text" layout="Normal"><Font italic="true">s.</Font> <Font bold="true">1.</Font> (<Font italic="true">Geometria</Font>) um ponto ou conjunto de pontos comuns a duas ou mais figuras. <Font bold="true">2.</Font> <Font encoding="UTF-8">tamb\303\251m chamado (</Font><Font italic="true">arcaico</Font>)  <Font bold="true">produto.</Font> (<Font italic="true">Teoria dos conjuntos</Font>) <Font bold="true">a.</Font> o conjunto de e<Font encoding="UTF-8">lementos que s\303\243o membros de dois ou mais conjuntos, escrito S <Font family="MaplePi">\303\207</Font></Font> T  ou <Font family="MaplePi" encoding="UTF-8">\303\207</Font><Font subscript="true" italic="true">i</Font> S<Font subscript="true" italic="true">i</Font>. No seguinte <Hyperlink linktarget="Dictionary:Definition/Venndiagram" hyperlink="true"><Font style="Dictionary Hyperlink" family="Times New Roman">diagrama de Venn</Font></Hyperlink><Font encoding="UTF-8"> , os conjuntos S e T est\303\243o representados pelas regi\303\265es hachuradas na vertical e horizontal, repectivamente; a interse\303\247\303\243o delas \303\251 a regi\303\243o hachurada em ambas as dire\303\247\303\265es.</Font></Text-field>
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<Text-field style="Text" layout="Normal">S <Font family="MaplePi" encoding="UTF-8">\303\207</Font><Font encoding="UTF-8"> T est\303\241 hachurada em cruz. </Font><Font bold="true">b.</Font><Font encoding="UTF-8"> a opera\303\247\303\243o bin\303\241ria que forma tal conjunto a partir de dois conjuntos dados. </Font><Font bold="true">c.</Font><Font encoding="UTF-8"> mais geral, a interse\303\247\303\243o sobre qualquer </Font><Hyperlink linktarget="Dictionary:Definition/collection" hyperlink="true"><Font style="Dictionary Hyperlink" family="Times New Roman" encoding="UTF-8">cole\303\247\303\243o</Font></Hyperlink> de objetos 
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de um dado conjunto<Font encoding="UTF-8">  X  \303\251 o conjunto cujos elementos est\303\243o em cada membro da cole\303\247\303\243o. E \303\251 denotada 
</Font>             <Font family="MaplePi" encoding="UTF-8">\303\207</Font><Font subscript="true" family="MaplePi">a<Font encoding="UTF-8">\303\216</Font></Font><Font subscript="true">A</Font> C<Font subscript="true" family="MaplePi">a</Font> 
ou  <Font family="MaplePi" encoding="UTF-8">\303\207</Font><Font encoding="UTF-8">C. Se a cole\303\247\303\243o dos subconjuntos for vazia,  <Font family="MaplePi">\303\207</Font></Font> <Font family="MaplePi" encoding="UTF-8">\303\206</Font> = X  enquanto  <Font family="MaplePi" encoding="UTF-8">\303\210</Font> <Font family="MaplePi" encoding="UTF-8">\303\206</Font> = <Font family="MaplePi" encoding="UTF-8">\303\206</Font><Font encoding="UTF-8">;  assim, para evitar o paradoxo aparente de que a interse\303\247\303\243o n\303\243o est\303\241 contida na uni\303\243o, \303\240s vezes \303\251 \303\272til substituir o universo X por  <Font family="MaplePi">\303\210</Font>C antes de computar a interse\303\247\303\243o denotada por  <Font family="MaplePi">\303\207</Font>*. Isto muda somente a interse\303\247\303\243o sobre uma cole\303\247\303\243o vazia e assegura que  <Font family="MaplePi">\303\207</Font>*C \303\251 sempre um subconjunto de <Font family="MaplePi">\303\210</Font></Font>C.</Text-field>
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