SymbolicIdentityArray

SymbolicIdentityArray[{n1,n2,}]

表示一个 n1×n2××n1×n2× 数组,如果所有 ikjk,则其元素 ai1,i2,,j1,j2, 等于 1,否则为 0.

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范例

打开所有单元关闭所有单元

基本范例  (2)

符号数组变量关于其自身的导数是 SymbolicIdentityArray

创建具有显式数值维度的 SymbolicIdentityArray

a 转换为显式数组:

a 转换为 SparseArray:

范围  (2)

算术运算:

数组运算:

属性和关系  (5)

SymbolicIdentityArray 给出数组的符号表示:

使用 Normala 转换为显式数组:

IdentityMatrix[n] 给出 SymbolicIdentityArray[{n}] 的显式版本:

SymbolicIdentityArraySymbolicDeltaProductArray 的一个特例:

符号数组变量关于其自身的导数是 SymbolicIdentityArray

SymbolicIdentityArray 对象是 ArrayDot 的恒等元:

Wolfram Research (2024),SymbolicIdentityArray,Wolfram 语言函数,https://reference.wolfram.com/language/ref/SymbolicIdentityArray.html.

文本

Wolfram Research (2024),SymbolicIdentityArray,Wolfram 语言函数,https://reference.wolfram.com/language/ref/SymbolicIdentityArray.html.

CMS

Wolfram 语言. 2024. "SymbolicIdentityArray." Wolfram 语言与系统参考资料中心. Wolfram Research. https://reference.wolfram.com/language/ref/SymbolicIdentityArray.html.

APA

Wolfram 语言. (2024). SymbolicIdentityArray. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/ref/SymbolicIdentityArray.html 年

BibTeX

@misc{reference.wolfram_2024_symbolicidentityarray, author="Wolfram Research", title="{SymbolicIdentityArray}", year="2024", howpublished="\url{https://reference.wolfram.com/language/ref/SymbolicIdentityArray.html}", note=[Accessed: 22-November-2024 ]}

BibLaTeX

@online{reference.wolfram_2024_symbolicidentityarray, organization={Wolfram Research}, title={SymbolicIdentityArray}, year={2024}, url={https://reference.wolfram.com/language/ref/SymbolicIdentityArray.html}, note=[Accessed: 22-November-2024 ]}