关于位运算

是这样的，在昨天 ABC G 的题解介绍半群（好像也叫半环来着）的部分中，举了俩半群 (A,+,\cdot) 的例子：

• For a positive integer n, A is a set of non-negative integer less than 2 ^n, + is bitwise logical sum, and \cdot is bitwise logical product.
• For a positive integer n, A is a set of non-negative integer less than 2^n, + is bitwise exclusive logical sum, and \cdot is bitwise logical product.

谁知道这些 bitwise 操作符都是啥啊/kel

百度和必应无果。