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SymbolicOnesArray[]

represents an array of ones with unspecified dimensions.

SymbolicOnesArray[{n1,n2,…}]

represents an n1×n2×… array of ones.

Details
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Basic Examples  
Scope  
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SymbolicOnesArray

SymbolicOnesArray[]

represents an array of ones with unspecified dimensions.

SymbolicOnesArray[{n1,n2,…}]

represents an n1×n2×… array of ones.

Details

  • Valid dimension specifications ni in SymbolicOnesArray[{n1,n2,…}] are positive integers. It is also possible to work with symbolic dimension specifications.
  • SymbolicOnesArray may be produced by arithmetic operations and differentiation involving ArraySymbol objects.
  • For an array a=SymbolicOnesArray[{n1,n2,…}] with positive integer dimension specifications ni, Normal[a] converts a to an explicit array. SparseArray[a] converts a to a SparseArray.

Examples

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Basic Examples  (3)

Arithmetic operations may return a SymbolicOnesArray:

Wolfram Language code: a = ArraySymbol["a", {m, n, p}];
Wolfram Language code: a - a + 1

The derivative of an array expression may involve a SymbolicOnesArray:

Wolfram Language code: v = VectorSymbol["v", d];
Wolfram Language code: D[CentralMoment[v, r], v]

Create a SymbolicOnesArray with explicit numeric dimensions:

Wolfram Language code: a = SymbolicOnesArray[{2, 2, 2}]

Convert a to an explicit array:

Wolfram Language code: Normal[a]

Convert a to a SparseArray:

Wolfram Language code: SparseArray[a]

Scope  (2)

Arithmetic operations:

Wolfram Language code: SymbolicOnesArray[{m, n}] - 1
Wolfram Language code: SymbolicOnesArray[{m, n}] + x
Wolfram Language code: SymbolicOnesArray[{m, n}] MatrixSymbol["a", {m, n}]
Wolfram Language code: SymbolicOnesArray[{m, n, p}] ^ 7

Array operations:

Wolfram Language code: Transpose[SymbolicOnesArray[{m, n}]]
Wolfram Language code: TensorProduct[SymbolicOnesArray[{m, n}], SymbolicOnesArray[{p, q, r}]]

Properties & Relations  (3)

SymbolicOnesArray gives a symbolic representation of the array:

Wolfram Language code: a = SymbolicOnesArray[{2, 2, 2}]

ConstantArray gives an explicit array:

Wolfram Language code: b = ConstantArray[1, {2, 2, 2}]

Use Normal to convert a to an explicit array:

Wolfram Language code: Normal[a] === b

SymbolicZerosArray gives an array of zeros:

Wolfram Language code: a = SymbolicZerosArray[{2, 3, 4}]
Wolfram Language code: a + 1

SymbolicOnesArray is a special case of SymbolicDeltaProductArray:

Wolfram Language code: SymbolicDeltaProductArray[{2, 3, 4}, {}]
Wolfram Research (2024), SymbolicOnesArray, Wolfram Language function, https://reference.wolfram.com/language/ref/SymbolicOnesArray.html.

Text

Wolfram Research (2024), SymbolicOnesArray, Wolfram Language function, https://reference.wolfram.com/language/ref/SymbolicOnesArray.html.

CMS

Wolfram Language. 2024. "SymbolicOnesArray." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/SymbolicOnesArray.html.

APA

Wolfram Language. (2024). SymbolicOnesArray. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/SymbolicOnesArray.html

BibTeX

@misc{reference.wolfram_2026_symboliconesarray, author="Wolfram Research", title="{SymbolicOnesArray}", year="2024", howpublished="\url{https://reference.wolfram.com/language/ref/SymbolicOnesArray.html}", note=[Accessed: 13-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_symboliconesarray, organization={Wolfram Research}, title={SymbolicOnesArray}, year={2024}, url={https://reference.wolfram.com/language/ref/SymbolicOnesArray.html}, note=[Accessed: 13-June-2026]}