Last Updated
：2026/01/08
単位行列
Hiragana
たんいぎょうれつ
Noun
Japanese Meaning
線形代数において、主対角成分がすべて1で、それ以外の成分がすべて0である正方行列。単位元としての役割を果たし、任意のベクトルや行列に掛けてもそれを変化させない性質を持つ。
Easy Japanese Meaning
たてとよこがおなじかずのぎょうれつで、ななめがすべていち、ほかはれい。
Chinese (Simplified) Meaning
单位矩阵 / 乘法单位元的矩阵 / 主对角线为1、其余为0的方阵
Chinese (Traditional) Meaning
線性代數中的單位矩陣；主對角線為1，其餘元素為0 / 與同階矩陣相乘不改變對方的矩陣，為矩陣乘法的單位元
Korean Meaning
대각 성분이 1이고 나머지가 0인 정사각행렬 / 행렬 곱에서 항등원 역할을 하는 행렬
Indonesian
matriks identitas / matriks diagonal dengan 1 pada diagonal utama
Vietnamese Meaning
Ma trận đơn vị / Ma trận vuông với 1 trên đường chéo chính, 0 ở vị trí khác / Phần tử đơn vị của phép nhân ma trận
Tagalog Meaning
matris ng pagkakakilanlan / matris na may 1 sa diyagonal at 0 sa iba pang entry / elementong pagkakakilanlan sa multiplikasyon ng mga matris
Sense（1）
(linear algebra) identity matrix
（ canonical ）
（ romanization ）
（ hiragana ）
Quizzes for review
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単位行列
See correct answer
An identity matrix is a square matrix in which all the elements on the diagonal are 1 and all other elements are 0.
An identity matrix is a square matrix in which all the elements on the diagonal are 1 and all other elements are 0.
See correct answer
単位行列は、対角線上の要素が全て1で、それ以外の要素が全て0の正方形の行列です。
Japanese - English
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