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Identity function

Identity function

Function that returns its argument unchanged.

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Readers' pathsAug 2026 – Oct 2026

Readers go next to

Share of the 377 clicks on its links

  1. Identity matrix

    Square matrix with ones on the main diagonal and zeros elsewhere.

    21%

  2. Function (mathematics)

    Association of one output to each input.

    14%

  3. Idempotence

    Property of operations.

    12%

  4. Equality (mathematics)

    Basic notion of sameness in mathematics.

    11%

  5. Codomain

    Target set of a mathematical function.

    7.4%

  6. Indicator function

    Mathematical function characterizing set membership.

    5.6%

  7. Injective function

    Function that preserves distinctness.

    4.5%

  8. Monoid

    Algebraic structure with an associative operation and an identity element.

    3.7%

  9. Inclusion map

    Set-theoretic function.

    2.7%

Readers come from

Share of the 550 readers arriving from another article

  1. Bijection

    One-to-one correspondence.

    23%

  2. Identity (mathematics)

    Equation that is satisfied for all values of the variables.

    9.6%

  3. Inverse function

    Mathematical concept.

    9.3%

  4. Function (mathematics)

    Association of one output to each input.

    8%

  5. Involution (mathematics)

    Function that is its own inverse.

    7.5%

  6. Idempotence

    Property of operations.

    3.3%

  7. Inclusion map

    Set-theoretic function.

    2%

  8. Cardinality

    Size of a set in mathematics.

    1.8%

  9. Indicator function

    Mathematical function characterizing set membership.

    1.8%