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Any number of the form a + bi, where a and b are real numbers and i is an imaginary number whose square equals -1.
(Mathematics) any number of the form a + ib, where a and b are real numbers and i = √–1. See number1
a mathematical expression (a + bi) in which a and b are real numbers and i2=−1.
A number that can be expressed in terms of i (the square root of -1). Mathematically, such a number can be written a + bi, where a and b are real numbers. An example is 4 + 5i.
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|Noun||1.||complex number - (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1|
math, mathematics, maths - a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement
number - a concept of quantity involving zero and units; "every number has a unique position in the sequence"
complex conjugate - either of two complex numbers whose real parts are identical and whose imaginary parts differ only in sign
pure imaginary number - an imaginary number of the form a+bi where a is 0