http://owiki.kmu.edu.tw/index.php?action=history&feed=atom&title=Power_setPower set - 修訂歷史2026-05-25T04:44:16Z本站上此頁的修訂歷史MediaWiki 1.10.1http://owiki.kmu.edu.tw/index.php?title=Power_set&diff=504&oldid=prevItchen: 新頁面: === Definition === 對一個集合 S, 它的Power set 寫成 P(S) 或 2<sup>s</sup>, 是S 所有的Subset 的集合<br> === Example === If S is the set {a, b, c}, then the complete lis...2007-11-30T04:11:46Z<p>新頁面: === Definition === 對一個集合 S, 它的Power set 寫成 P(S) 或 2<sup>s</sup>, 是S 所有的Subset 的集合<br> === Example === If S is the set {a, b, c}, then the complete lis...</p>
<p><b>新頁面</b></p><div>=== Definition ===<br />
<br />
對一個集合 S, 它的Power set 寫成 P(S) 或 2<sup>s</sup>, 是S 所有的Subset 的集合<br><br />
<br />
=== Example ===<br />
<br />
If S is the set {a, b, c}, then the complete list of subsets of S is as follows:<br />
<br />
* { } (also denoted ∅, the empty set)<br />
* {a}<br />
* {b}<br />
* {c}<br />
* {a, b}<br />
* {a, c}<br />
* {b, c}<br />
* {a, b, c}<br />
<br />
and hence the power set of S is<br />
<br />
2<sup>s</sup> = {{},{a},{b},{c},{a,b},{a,c},{b,c},{a,b,c}}</div>Itchen