In this paper, we introduce a proof of alternating sign matrix theorem that the number of alternating sign matrix of order n is
◁수식 삽입▷(원문을 참조하세요)
done by Kuperburg. And obsearve some objects which are equinumerous with alternating sign matrix. And classify ASM``s by the symmetry type and list known facts about the number of ASM``s of each class.