Multiplier may refer to:

Mathematics

* Multiplier (arithmetic), the number of multiples being computed in multiplication * Constant multiplier, 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 subject to equality constraints (i.e., subject to the condition that one or more equations have to be satisfied ex ...

, a scalar variable used in mathematics to solve an optimisation problem for a given constraint *

Multiplier (Fourier analysis) In Fourier analysis, a multiplier operator is a type of linear operator, or transformation of functions. These operators act on a function by altering its Fourier transform. Specifically they multiply the Fourier transform of a function by a speci ...

, 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 maps. A map is a formula for computing a value of a variable based on its own previous value or values; a quadratic map is one that involves the previous value raised to the powers o ...

Characteristic multiplier In mathematics, and particularly ordinary differential equations, a characteristic multiplier is an eigenvalue of a monodromy matrix. The logarithm of a characteristic multiplier is also known as characteristic exponent. They appear in Floquet the ...

, 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 (ring theory), ideal in a "non-degenerate" way. It is the noncommutat ...

, 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 compu ...

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

Analog multiplier In electronics, an analog multiplier is a device that takes two analog signals and produces an output which is their product. Such circuits can be used to implement related functions such as ''squares'' (apply same signal to both inputs), and '' ...

, a device that multiplies two analog signals *

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

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

Voltage multiplier 280px, Villard cascade voltage multiplier. A voltage multiplier is an electrical circuit that converts AC electrical power from a lower voltage to a higher DC voltage, typically using a network of capacitors and diodes. Voltage multipliers can ...

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

, 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, a money multiplier is one of various closely related ratios of commercial bank money to central bank money (also called the monetary base) under a fractional-reserve banking system. It relates to the ''maximum'' amount of com ...

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

fishing reel A fishing reel is a hand- cranked reel used in angling to wind and stow fishing line, typical mounted onto a fishing rod, but may also be used to retrieve a tethered arrow when bowfishing. Modern recreational fishing reels usually have fitting ...

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. A CPU with a 10x multiplier will thus see 10 internal cycles (produced by PLL-based frequency ...

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'' * An incorrect way of referring to the Youtuber ''

Markiplier Mark Edward Fischbach ( ; born June 28, 1989), also known as Markiplier, is an American YouTuber. Originally from Honolulu, Hawaii, he began his career in Cincinnati, Ohio, and is currently based in Los Angeles, California. In addition to uplo ...

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