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LessThan[y]

is an operator form that yields x<y when applied to an expression x.

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Examples  
Basic Examples  
Scope  
Applications  
Properties & Relations  
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LessThan

LessThan[y]

is an operator form that yields x<y when applied to an expression x.

Details

Examples

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Basic Examples  (3)

Check numeric order:

For symbolic expressions, the result is given as an inequality:

Select the numbers that are smaller than 10 in a list:

Scope  (4)

Use LessThan with numbers:

Use LessThan with numeric Quantity objects:

Use LessThan with dates:

Use symbolic values:

Applications  (1)

Countries with small area:

Properties & Relations  (2)

Obtain the populations of the class of countries with an area smaller than 40 square kilometers:

This is the total:

Compare the alternative notations:

Wolfram Research (2015), LessThan, Wolfram Language function, https://reference.wolfram.com/language/ref/LessThan.html.

Text

Wolfram Research (2015), LessThan, Wolfram Language function, https://reference.wolfram.com/language/ref/LessThan.html.

CMS

Wolfram Language. 2015. "LessThan." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/LessThan.html.

APA

Wolfram Language. (2015). LessThan. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/LessThan.html

BibTeX

@misc{reference.wolfram_2025_lessthan, author="Wolfram Research", title="{LessThan}", year="2015", howpublished="\url{https://reference.wolfram.com/language/ref/LessThan.html}", note=[Accessed: 10-August-2025]}

BibLaTeX

@online{reference.wolfram_2025_lessthan, organization={Wolfram Research}, title={LessThan}, year={2015}, url={https://reference.wolfram.com/language/ref/LessThan.html}, note=[Accessed: 10-August-2025]}