N {\displaystyle \mathbb {N} }
C {\displaystyle \mathbb {C} }
{ … | … } {\displaystyle \{\ldots \,{\big |}\,\ldots \}}
( a . . b ) {\displaystyle (a\,..\,b)} , [ a . . b ] {\displaystyle [a\,..\,b]}
⟨ … ⟩ {\displaystyle \langle \ldots \rangle }
V , W , U {\displaystyle V,W,U}
v → , w → {\displaystyle {\vec {v}},{\vec {w}}}
0 → {\displaystyle {\vec {0}}} , 0 → V {\displaystyle {\vec {0}}_{V}}
B , D {\displaystyle B,D}
E n = ⟨ e → 1 , … , e → n ⟩ {\displaystyle {\mathcal {E}}_{n}=\langle {\vec {e}}_{1},\,\ldots ,\,{\vec {e}}_{n}\rangle }
β → , δ → {\displaystyle {\vec {\beta }},{\vec {\delta }}}
R e p B ( v → ) {\displaystyle {\rm {Rep}}_{B}({\vec {v}})}
P n {\displaystyle {\mathcal {P}}_{n}}
M n × m {\displaystyle {\mathcal {M}}_{n\!\times \!m}}
[ S ] {\displaystyle [S]}
M ⊕ N {\displaystyle M\oplus N}
V ≅ W {\displaystyle V\cong W}
h , g {\displaystyle h,g}
H , G {\displaystyle H,G}
t , s {\displaystyle t,s}
T , S {\displaystyle T,S}
R e p B , D ( h ) {\displaystyle {\rm {Rep}}_{B,D}(h)}
h i , j {\displaystyle h_{i,j}}
| T | {\displaystyle \left|T\right|}
R ( h ) , N ( h ) {\displaystyle {\mathcal {R}}(h),{\mathcal {N}}(h)}
R ∞ ( h ) , N ∞ ( h ) {\displaystyle {\mathcal {R}}_{\infty }(h),{\mathcal {N}}_{\infty }(h)}
关于封面. 这是用于系统 x 1 + 2 x 2 = 6 {\displaystyle x_{1}+2x_{2}=6} , 3 x 1 + x 2 = 8 {\displaystyle 3x_{1}+x_{2}=8} 的克莱姆法则。第一个方框的大小是所示的行列式(大小的绝对值是面积)。第二个方框的大小是 x 1 {\displaystyle x_{1}} 乘以它,等于最终方框的大小。因此, x 1 {\displaystyle x_{1}} 是最终行列式除以第一个行列式。