Characteristic

Characteristic (from the Greek word for a property or attribute (= trait) of an entity) may refer to:

In physics and engineering, any characteristic curve that shows the relationship between certain input and output parameters, for example:

• An I-V or current-voltage characteristic is the current in a circuit as a function of the applied voltage
• Receiver operating characteristic

In navigation:

• Light characteristic, pattern of a lighted beacon

In mathematics:

• The characteristic of a ring R is a number that describes what happens to integers when interpreted in R
• A characteristic function (disambiguation) usually means the indicator function of a subset, though the term has other meanings in specific domains
• The characteristic polynomial in linear algebra is a polynomial associated to a square matrix
• The Euler characteristic is a topological invariant
• A characteristic subgroup in group theory is a subgroup that is invariant under all automorphisms
• A characteristic curve associated with a partial differential equation
• The characteristic of a common logarithm is its integer part.

In fiction:

• Another name for ability score in Dungeons & Dragons

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