外積 (消歧義)
外積
(
英語:
)出現在
代數
、
幾何學
等領域中。對兩
向量
A
→
{\displaystyle {\vec {A}}}
與
B
→
{\displaystyle {\vec {B}}}
而言,外積可指:
叉積
(Cross product),又稱向量積,常寫為
A
→
{\displaystyle {\vec {A}}}
×
B
→
{\displaystyle {\vec {B}}}
;
楔積
(Wedge product或Exterior product),常寫為
A
→
{\displaystyle {\vec {A}}}
∧
B
→
{\displaystyle {\vec {B}}}
;
外積
(Outer product),常寫為
A
→
⊗
B
→
{\displaystyle {\vec {A}}\otimes {\vec {B}}}
。
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