What is this symbol ≡ and what does it mean?

3 years ago

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Salvador Cormier

1 Answer

Ante R Verified Sherpa Tutor ✓

Professional Engineer with years of experience, especially in tutoring

In mathematics, the triple bar symbol means "equivalent to".

It is used in several branches of mathematics in different ways, but usually you can think of it as "equals to".

Example:

Writing f(x) ≡ g(x) would mean that the f and g functions are identical for all inputs. It would be also accurate to write f(x) = g(x).

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