하나,one Copy: 하나,one has comma Hide Show 원핫,one-hot 원콜드,one-cold 영,zero 또는 하나인... -> rel. 둘,two { (0,1)-valued * 크로네커_델타,Kronecker_delta Boolean * binary * 비트,bit ... } Rel empty_product =,empty_product . empty_product ///번역? { empty_product Rel empty_sum https://oeis.org/wiki/Empty_product }//empty product .... empty product empty product https://oeis.org/wiki/One