# NonNegativeReals

represents the domain of non-negative real numbers.

# Details

• xNonNegativeReals evaluates immediately if x is a numeric quantity.
• Simplify[exprNonNegativeReals,assum] can be used to try to determine whether an expression corresponds to a non-negative real number under the given assumptions.
• (x1|x2|)NonNegativeReals and {x1,x2,}NonNegativeReals test whether all xi are non-negative real numbers.
• NonNegativeReals is output in StandardForm and TraditionalForm as . This typeset form can be input using nnreals.

# Examples

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## Basic Examples(3)

is a non-negative real number:

If is a real number, then is a non-negative real number:

Find non-negative real solutions of an equation:

## Scope(4)

Test if a numeric quantity is non-negative:

Make domain membership assumptions:

Specify the default domain over which a function should work:

Test whether several numbers are non-negative reals:

If any number is explicitly not a non-negative number, the result is False:

## Applications(1)

Testing membership in the non-negative reals is a fast way to verify non-negativity of a large list:

## Properties & Relations(4)

Membership in NonNegativeReals is equivalent to membership in Reals along with non-negativity:

NonNegativeReals is contained in Complexes:

NonNegativeReals is disjoint from NegativeReals:

It intersects NonPositiveReals:

Wolfram Research (2019), NonNegativeReals, Wolfram Language function, https://reference.wolfram.com/language/ref/NonNegativeReals.html.

#### Text

Wolfram Research (2019), NonNegativeReals, Wolfram Language function, https://reference.wolfram.com/language/ref/NonNegativeReals.html.

#### CMS

Wolfram Language. 2019. "NonNegativeReals." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/NonNegativeReals.html.

#### APA

Wolfram Language. (2019). NonNegativeReals. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/NonNegativeReals.html

#### BibTeX

@misc{reference.wolfram_2024_nonnegativereals, author="Wolfram Research", title="{NonNegativeReals}", year="2019", howpublished="\url{https://reference.wolfram.com/language/ref/NonNegativeReals.html}", note=[Accessed: 25-June-2024 ]}

#### BibLaTeX

@online{reference.wolfram_2024_nonnegativereals, organization={Wolfram Research}, title={NonNegativeReals}, year={2019}, url={https://reference.wolfram.com/language/ref/NonNegativeReals.html}, note=[Accessed: 25-June-2024 ]}