≤ may refer to:
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Inequality (mathematics), relation between values; ''a'' ≤ ''b'' means "''a'' is less than or equal to ''b''"
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Subgroup
In group theory, a branch of mathematics, given a group ''G'' under a binary operation ∗, a subset ''H'' of ''G'' is called a subgroup of ''G'' if ''H'' also forms a group under the operation ∗. More precisely, ''H'' is a subgroup ...
, a subset of a given group in group theory; ''H'' ≤ ''G'' is read as "''H'' is a subgroup of ''G''"
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