Multiplier may refer to:

Mathematics

Multiplier (arithmetic) Multiplication is one of the four elementary mathematical operations of arithmetic, with the other ones being addition, subtraction, and division. The result of a multiplication operation is called a '' product''. Multiplication is often de ...

, the number of multiples being computed in multiplication *

Constant multiplier In mathematics, a coefficient is a multiplicative factor involved in some term of a polynomial, a series, or any other type of expression. It may be a number without units, in which case it is known as a numerical factor. It may also be a c ...

, a constant factor with units of measurement *

Lagrange multiplier In mathematical optimization, the method of Lagrange multipliers is a strategy for finding the local maxima and minima of a function (mathematics), function subject to constraint (mathematics), equation constraints (i.e., subject to the conditio ...

, a scalar variable used in mathematics to solve an optimisation problem for a given constraint * Multiplier (Fourier analysis), an operator that multiplies the Fourier coefficients of a function by a specified function (known as the symbol) * Multiplier of orbit, a formula for computing a value of a variable based on its own previous value or values; see

Periodic points of complex quadratic mappings This article describes periodic points of some Complex quadratic polynomial, complex quadratic maps. A map is a formula for computing a value of a variable based on its own previous value or values; a Quadratic equation, quadratic map is one that in ...

* Characteristic multiplier, an eigenvalue of a monodromy matrix *

Multiplier algebra In mathematics, the multiplier algebra, denoted by ''M''(''A''), of a C*-algebra ''A'' is a unital C*-algebra that is the largest unital C*-algebra that contains ''A'' as an ideal in a "non-degenerate" way. It is the noncommutative generalization ...

, a construction on C*-Algebras and similar structures

Electrical engineering

Binary multiplier A binary multiplier is an electronic circuit used in digital electronics, such as a computer, to multiply two binary numbers. A variety of computer arithmetic techniques can be used to implement a digital multiplier. Most techniques involve com ...

, a digital circuit to perform rapid multiplication of two numbers in binary representation *

Analog multiplier An analog multiplier is an electronic circuit that produces an output level that is the mathematical product of the levels of its two analog signal inputs. Such circuits may be used to implement related functions such as ''squares'' by applying ...

, a device that multiplies two analog signals *

Frequency multiplier In electronics, a frequency multiplier is an electronic circuit that generates an output signal which has a frequency that is a harmonic (multiple) of its input frequency. Frequency multipliers consist of a nonlinear circuit that distorts the inp ...

, a device that generates a signal at an integer multiple of its input frequency *

Voltage multiplier image:Voltage Multiplier diagram.PNG, 280px, Villard cascade voltage multiplier. A voltage multiplier is an electrical circuit that converts Alternating current, AC electrical power from a lower voltage to a higher Direct current, DC voltage, typ ...

, an electrical circuit that converts AC electrical power from a lower voltage to a higher DC voltage. *

Schweigger multiplier A galvanometer is an electromechanical measuring instrument for electric current. Early galvanometers were uncalibrated, but improved versions, called ammeters, were calibrated and could measure the flow of current more precisely. Galvanomet ...

, an early galvanometer

Macroeconomics

Multiplier (economics) In macroeconomics, a multiplier is a factor of proportionality that measures how much an endogenous variable changes in response to a change in some exogenous variable. For example, suppose variable ''x'' changes by ''k'' units, which causes ...

, any measure of the proportional effect of an exogenous variable on an endogenous variable *

Fiscal multiplier In economics, the fiscal multiplier (not to be confused with the money multiplier) is the ratio of change in national income arising from a change in government spending. More generally, the exogenous spending multiplier is the ratio of change ...

, the ratio of the change in aggregate demand to the change in government spending that caused it *

Money multiplier In monetary economics, the money multiplier is the ratio of the money supply to the monetary base (i.e. central bank money). In some simplified expositions, the monetary multiplier is presented as simply the reciprocal of the reserve ratio, i ...

, the ratio of the money generated by the banking system to the central bank's increase in the monetary base that caused it

Others

Force multiplier In military science, force multiplication or a force multiplier is a factor or a combination of factors that gives personnel or weapons (or other hardware) the ability to accomplish greater feats than without it. The expected size increase requ ...

, in warfare a factor that dramatically increases the combat-effectiveness of a given military force * A multiplier

fishing reel A fishing reel is a hand-crank (mechanism), cranked reel used in angling to wind and stow fishing line, typically mounted onto a fishing rod, but may also be used on compound bows or crossbows to retrieve tethered arrows when bowfishing. Modern ...

creates less friction when casting * A

CPU multiplier In computing, the clock multiplier (or CPU multiplier or bus/core ratio) sets the ratio of an internal CPU clock rate to the externally supplied clock. This may be implemented with phase-locked loop (PLL) frequency multiplier circuitry. A CPU wi ...

allows a CPU to perform more cycles per single cycle of the front side bus *

Multiplier (linguistics) In linguistics, more precisely in traditional grammar, a multiplier is a word that counts how many times its object should be multiplied, such as ''single'' or ''double''. They are contrasted with distributive numbers. In English, this part of ...

, an adjective indicating number of times something is to be multiplied * '' Multipliers: How the Best Leaders Make Everyone Smarter'' {{disambiguation